diff --git a/apps/cs/app/site/register/page.tsx b/apps/cs/app/site/register/page.tsx
new file mode 100644
index 000000000..a11d0b60c
--- /dev/null
+++ b/apps/cs/app/site/register/page.tsx
@@ -0,0 +1,2 @@
+import { RegisterPage } from "@/pages/site";
+export default RegisterPage;
diff --git a/apps/cs/src/app/styles/components.css b/apps/cs/src/app/styles/components.css
index 4d5caaf96..ec137cf25 100644
--- a/apps/cs/src/app/styles/components.css
+++ b/apps/cs/src/app/styles/components.css
@@ -5,7 +5,7 @@
     @apply relative m-[0.6rem] box-border min-h-[2rem] rounded-[0.5rem] p-[0.6rem] text-[1.3rem] text-[#666];
   }
   .card-border {
-    @apply shadow-blur border border-[#dbe2e6] bg-[rgba(255,255,255,0.6)];
+    @apply border border-[#dbe2e6] bg-[rgba(255,255,255,0.6)] shadow-blur;
   }
   .card-header {
     @apply -mx-[0.6rem] flex items-center justify-between border-b border-b-[#e1e7eb] p-4;
@@ -13,4 +13,13 @@
   .card-footer {
     @apply -mx-[0.6rem] mt-2 flex items-center justify-center border-t border-t-[#e1e7eb] py-4;
   }
+
+  [data-mode="dark"] {
+    .card-border {
+      @apply border-[#3f4042] bg-[rgba(255,255,255,0.065)];
+    }
+    .card-header {
+      @apply border-b-[#3f4042];
+    }
+  }
 }
diff --git a/apps/cs/src/entities/code/ui/code-select.tsx b/apps/cs/src/entities/code/ui/code-select.tsx
index 88c8a1368..5d73ee1d3 100644
--- a/apps/cs/src/entities/code/ui/code-select.tsx
+++ b/apps/cs/src/entities/code/ui/code-select.tsx
@@ -28,7 +28,7 @@ function CodeSelect({ upCd, defaultValue, ...props }: CodeSelectProps) {
 
   return (
     <Select {...props}>
-      <SelectTrigger className="w-[12rem] text-[1.3rem] text-label">
+      <SelectTrigger className="w-[12rem]">
         <SelectValue placeholder={defaultValueText} />
       </SelectTrigger>
       <SelectContent>
diff --git a/apps/cs/src/pages/site/ui/domain-management-dialog.tsx b/apps/cs/src/pages/site/ui/domain-management-dialog.tsx
new file mode 100644
index 000000000..8c30cf775
--- /dev/null
+++ b/apps/cs/src/pages/site/ui/domain-management-dialog.tsx
@@ -0,0 +1,212 @@
+"use client";
+
+import { useState } from "react";
+import {
+  Dialog,
+  DialogTrigger,
+  Button,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+  Input,
+  Checkbox,
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+  DialogFooter,
+  DialogClose,
+} from "@common/components";
+
+export type Domain = {
+  id: number;
+  domainUrl: string;
+  isRepresentative: boolean;
+  isActive: "true" | "false";
+};
+
+type DomainManagementDialogProps = {
+  triggerDisabled?: boolean;
+  handleSave: (rows: Domain[]) => void;
+};
+
+function DomainManagementDialog({
+  triggerDisabled,
+  handleSave,
+}: DomainManagementDialogProps) {
+  const [rows, setRows] = useState<Domain[]>([]);
+  const [rowSelection, setRowSelection] = useState<Domain["id"][]>([]);
+
+  const onSave = () => {
+    handleSave(rows);
+  };
+
+  const handleAddDomain = () => {
+    const newDomain: Domain = {
+      id: Date.now(),
+      domainUrl: "",
+      isRepresentative: rows.length === 0,
+      isActive: "true",
+    };
+    setRows([...rows, newDomain]);
+  };
+
+  const handleDeleteDomain = () => {
+    const filteredRows = rows.filter((row) => !rowSelection.includes(row.id));
+    const hasRepresentative = filteredRows.some((row) => row.isRepresentative);
+
+    let updatedRows = filteredRows;
+    if (!hasRepresentative && filteredRows.length > 0) {
+      updatedRows = filteredRows.map((row, index) =>
+        index === 0 ? { ...row, isRepresentative: true } : row,
+      );
+    }
+
+    setRows(updatedRows);
+    setRowSelection([]);
+  };
+
+  const handleDomainUrlChange = (id: number, value: string) => {
+    setRows(
+      rows.map((row) => (row.id === id ? { ...row, domainUrl: value } : row)),
+    );
+  };
+
+  const handleRepresentativeChange = (id: number) => {
+    setRows(
+      rows.map((row) => ({
+        ...row,
+        isRepresentative: row.id === id,
+      })),
+    );
+  };
+
+  const handleActiveChange = (id: number, value: "true" | "false") => {
+    setRows(
+      rows.map((row) => (row.id === id ? { ...row, isActive: value } : row)),
+    );
+  };
+
+  const toggleRowSelection = (id: number) => {
+    setRowSelection((prev) => {
+      if (prev.includes(id)) {
+        return prev.filter((item) => item !== id);
+      } else {
+        return [...prev, id];
+      }
+    });
+  };
+
+  return (
+    <Dialog>
+      <DialogTrigger asChild>
+        <Button disabled={triggerDisabled}>도메인 관리</Button>
+      </DialogTrigger>
+      <DialogContent className="sm:max-w-[600px]">
+        <DialogHeader>
+          <DialogTitle>도메인 관리</DialogTitle>
+        </DialogHeader>
+        <div className="mb-4 flex justify-end gap-2">
+          <Button size="sm" color="white" onClick={handleAddDomain}>
+            항목 추가
+          </Button>
+          <Button
+            size="sm"
+            color="red"
+            onClick={handleDeleteDomain}
+            disabled={rowSelection.length === 0}
+          >
+            항목 삭제
+          </Button>
+        </div>
+        <div className="card card-border">
+          <Table variant="secondary">
+            <colgroup>
+              <col width="8%" />
+              <col width="12%" />
+              <col width="40%" />
+              <col width="20%" />
+              <col width="20%" />
+            </colgroup>
+            <TableHeader>
+              <TableRow>
+                <TableHead>NO</TableHead>
+                <TableHead>선택</TableHead>
+                <TableHead>도메인URL</TableHead>
+                <TableHead>대표URL</TableHead>
+                <TableHead>사용여부</TableHead>
+              </TableRow>
+            </TableHeader>
+            <TableBody>
+              {rows.map((row, idx) => (
+                <TableRow key={row.id}>
+                  <TableCell align="center">{idx + 1}</TableCell>
+                  <TableCell align="center">
+                    <Checkbox
+                      checked={rowSelection.includes(row.id)}
+                      onCheckedChange={() => toggleRowSelection(row.id)}
+                      className="cursor-pointer"
+                    />
+                  </TableCell>
+                  <TableCell align="center">
+                    <Input
+                      value={row.domainUrl}
+                      onChange={(e) =>
+                        handleDomainUrlChange(row.id, e.target.value)
+                      }
+                      className="!text-[1.3rem]"
+                    />
+                  </TableCell>
+                  <TableCell align="center">
+                    <Checkbox
+                      checked={row.isRepresentative}
+                      onCheckedChange={() => handleRepresentativeChange(row.id)}
+                      className="cursor-pointer"
+                    />
+                  </TableCell>
+                  <TableCell align="center">
+                    <Select
+                      value={row.isActive}
+                      onValueChange={(value: "true" | "false") =>
+                        handleActiveChange(row.id, value)
+                      }
+                    >
+                      <SelectTrigger className="mx-auto w-[100px]">
+                        <SelectValue placeholder="선택" />
+                      </SelectTrigger>
+                      <SelectContent>
+                        <SelectItem value="true">예</SelectItem>
+                        <SelectItem value="false">아니오</SelectItem>
+                      </SelectContent>
+                    </Select>
+                  </TableCell>
+                </TableRow>
+              ))}
+            </TableBody>
+          </Table>
+        </div>
+        <DialogFooter className="!justify-center">
+          <DialogClose asChild>
+            <Button size="lg" onClick={onSave}>
+              저장
+            </Button>
+          </DialogClose>
+          <DialogClose asChild>
+            <Button size="lg" color="white">
+              취소
+            </Button>
+          </DialogClose>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
+
+export { DomainManagementDialog };
diff --git a/apps/cs/src/pages/site/ui/ip-management-dialog.tsx b/apps/cs/src/pages/site/ui/ip-management-dialog.tsx
index 9f637e3be..1390efd45 100644
--- a/apps/cs/src/pages/site/ui/ip-management-dialog.tsx
+++ b/apps/cs/src/pages/site/ui/ip-management-dialog.tsx
@@ -18,6 +18,8 @@ import {
   RadioGroup,
   RadioGroupItem,
   Checkbox,
+  DialogFooter,
+  DialogClose,
 } from "@common/components";
 
 type IP = {
@@ -34,7 +36,7 @@ function IPManagementDialog({ triggerDisabled }: IPManagementDialogProps) {
   const [rows, setRows] = useState<IP[]>([]);
   const [rowSelection, setRowSelection] = useState<IP["id"][]>([]);
 
-  const handleSave = () => {};
+  const onSave = () => {};
 
   const handleAddIP = () => {
     const newIP: IP = {
@@ -86,9 +88,6 @@ function IPManagementDialog({ triggerDisabled }: IPManagementDialogProps) {
           <Button size="sm" color="green">
             엑셀 업로드
           </Button>
-          <Button size="sm" onClick={handleSave}>
-            저장
-          </Button>
           <Button size="sm" color="white" onClick={handleAddIP}>
             항목 추가
           </Button>
@@ -102,7 +101,7 @@ function IPManagementDialog({ triggerDisabled }: IPManagementDialogProps) {
           </Button>
         </div>
         <div className="card card-border">
-          <Table>
+          <Table variant="secondary">
             <colgroup>
               <col width="10%" />
               <col width="10%" />
@@ -160,6 +159,18 @@ function IPManagementDialog({ triggerDisabled }: IPManagementDialogProps) {
             </TableBody>
           </Table>
         </div>
+        <DialogFooter className="!justify-center">
+          <DialogClose asChild>
+            <Button size="lg" onClick={onSave}>
+              저장
+            </Button>
+          </DialogClose>
+          <DialogClose asChild>
+            <Button size="lg" color="white">
+              취소
+            </Button>
+          </DialogClose>
+        </DialogFooter>
       </DialogContent>
     </Dialog>
   );
diff --git a/apps/cs/src/pages/site/ui/layout.tsx b/apps/cs/src/pages/site/ui/layout.tsx
index a5d85dee3..c9b12a1f1 100644
--- a/apps/cs/src/pages/site/ui/layout.tsx
+++ b/apps/cs/src/pages/site/ui/layout.tsx
@@ -3,8 +3,8 @@ import { BaseLayout } from "@common/components";
 function SitePageLayout({ children }: { children: React.ReactNode }) {
   return (
     <BaseLayout>
-      <div className="h-auto min-h-full bg-[#f1f6f9]">
-        <h2 className="px-[1.8rem] pt-[2rem] text-[2.4rem] font-semibold text-[#4c5e6f]">
+      <div className="bg-container h-auto min-h-full">
+        <h2 className="text-title px-[1.8rem] pt-[2rem] text-[2.4rem] font-semibold">
           사이트 관리
         </h2>
         {children}
diff --git a/apps/cs/src/pages/site/ui/register-page.tsx b/apps/cs/src/pages/site/ui/register-page.tsx
index 0257176ab..48347e823 100644
--- a/apps/cs/src/pages/site/ui/register-page.tsx
+++ b/apps/cs/src/pages/site/ui/register-page.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { useState } from "react";
+import { useRouter } from "next/navigation";
 import { SiteApi } from "@/entities/site";
 import { ENDPOINT } from "@/shared/config/api";
 import {
@@ -19,25 +20,45 @@ import { useQuery } from "@tanstack/react-query";
 import { CodeSelect } from "@/entities/code";
 import { SitePageLayout } from "./layout";
 import { IPManagementDialog } from "./ip-management-dialog";
+import {
+  DomainManagementDialog,
+  type Domain,
+} from "./domain-management-dialog";
+import type { ISiteDetail } from "@/entities/site/model/site-interface";
+
+type ViewState = Partial<ISiteDetail>;
 
 function RegisterPage({ siteId }: { siteId: string }) {
+  const router = useRouter();
   const { data: siteDetail } = useQuery({
     queryKey: [ENDPOINT.CMS_SERVICE.SITES, siteId],
     queryFn: () => SiteApi.siteDetail(siteId),
     select: (data) => {
-      setSiteKndCd(data.siteKndCd);
+      handleViewStateChange("siteKndCd")(data.siteKndCd);
+      handleViewStateChange("siteSkn")(data.siteSkn);
       return data;
     },
     enabled: !!siteId,
   });
-  const [siteKndCd, setSiteKndCd] = useState<string>("");
-  const [, setSiteSkinCd] = useState<string>("");
+
+  const [viewState, setViewState] = useState<ViewState>({});
+  const [representativeDomain, setRepresentativeDomain] = useState<string>("");
+
+  const handleViewStateChange = (key: keyof ISiteDetail) => (value: string) => {
+    setViewState({ ...viewState, [key]: value });
+  };
+
+  const handleDomainSave = (rows: Domain[]) => {
+    setRepresentativeDomain(
+      rows.find((row) => row.isRepresentative)?.domainUrl || "",
+    );
+  };
 
   return (
     <SitePageLayout>
       <div className="card card-border !mt-6">
         <div className="card-header">
-          <h3 className="text-2xl font-medium text-[#666]">사이트 등록/수정</h3>
+          <h3 className="text-2xl font-medium text-label">사이트 등록/수정</h3>
         </div>
         <div className="card">
           <Table variant="secondary">
@@ -53,6 +74,9 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     className="w-[12rem] !text-[1.3rem]"
                     defaultValue={siteDetail?.siteId}
                     disabled={!!siteId}
+                    onChange={(e) =>
+                      handleViewStateChange("siteId")(e.target.value)
+                    }
                   />
                 </TableCell>
               </TableRow>
@@ -63,11 +87,13 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     <CodeSelect
                       upCd="SITEKNDCD"
                       defaultValue={siteDetail?.siteKndCd}
-                      onValueChange={(value) => {
-                        setSiteKndCd(value);
-                      }}
+                      onValueChange={handleViewStateChange("siteKndCd")}
                     />
-                    <IPManagementDialog triggerDisabled={siteKndCd === "O"} />
+                    {siteId && (
+                      <IPManagementDialog
+                        triggerDisabled={viewState.siteKndCd === "O"}
+                      />
+                    )}
                   </div>
                 </TableCell>
               </TableRow>
@@ -77,9 +103,7 @@ function RegisterPage({ siteId }: { siteId: string }) {
                   <CodeSelect
                     upCd="SITESKINCD"
                     defaultValue={siteDetail?.siteSkn}
-                    onValueChange={(value) => {
-                      setSiteSkinCd(value);
-                    }}
+                    onValueChange={handleViewStateChange("siteSkn")}
                   />
                 </TableCell>
               </TableRow>
@@ -90,6 +114,9 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     className="!text-[1.3rem]"
                     placeholder="사이트명을 입력하십시오."
                     defaultValue={siteDetail?.siteNm}
+                    onChange={(e) =>
+                      handleViewStateChange("siteNm")(e.target.value)
+                    }
                   />
                 </TableCell>
               </TableRow>
@@ -100,9 +127,23 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     className="!text-[1.3rem]"
                     placeholder="사이트 설명을 입력하십시오."
                     defaultValue={siteDetail?.siteExpln}
+                    onChange={(e) =>
+                      handleViewStateChange("siteExpln")(e.target.value)
+                    }
                   />
                 </TableCell>
               </TableRow>
+              <TableRow className={`${!siteId ? "hidden" : ""}`}>
+                <TableHead>사이트 도메인</TableHead>
+                <TableCell className="border">
+                  <div className="flex gap-2">
+                    <div className="bg-form h-[3.2rem] w-[21.5rem] cursor-not-allowed rounded-md border border-input px-3 py-2 text-[1.3rem] opacity-50">
+                      {representativeDomain}
+                    </div>
+                    <DomainManagementDialog handleSave={handleDomainSave} />
+                  </div>
+                </TableCell>
+              </TableRow>
               <TableRow>
                 <TableHead>사이트 하단 표기 주소</TableHead>
                 <TableCell className="border">
@@ -110,6 +151,9 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     className="!text-[1.3rem]"
                     placeholder="사이트 하단 주소를 입력하십시오."
                     defaultValue={siteDetail?.siteAddr}
+                    onChange={(e) =>
+                      handleViewStateChange("siteAddr")(e.target.value)
+                    }
                   />
                 </TableCell>
               </TableRow>
@@ -120,6 +164,9 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     className="!text-[1.3rem]"
                     placeholder="사이트 하단 전화번호를 입력하십시오."
                     defaultValue={siteDetail?.telNo}
+                    onChange={(e) =>
+                      handleViewStateChange("telNo")(e.target.value)
+                    }
                   />
                 </TableCell>
               </TableRow>
@@ -130,6 +177,9 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     className="!text-[1.3rem]"
                     placeholder="사이트 하단 팩스번호를 입력하십시오."
                     defaultValue={siteDetail?.faxNumber}
+                    onChange={(e) =>
+                      handleViewStateChange("faxNumber")(e.target.value)
+                    }
                   />
                 </TableCell>
               </TableRow>
@@ -140,6 +190,9 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     className="!text-[1.3rem]"
                     placeholder="사이트 표기 내용을 입력하십시오. (ex. COPYRIGHT c 2013 KECO. ALL RIGHTS RESERVED.)"
                     defaultValue={siteDetail?.lwndCn}
+                    onChange={(e) =>
+                      handleViewStateChange("lwndCn")(e.target.value)
+                    }
                   />
                 </TableCell>
               </TableRow>
@@ -150,6 +203,9 @@ function RegisterPage({ siteId }: { siteId: string }) {
                     className="!text-[1.3rem]"
                     placeholder="아이콘 파일 경로 및 파일명을 입력하여 주십시오."
                     defaultValue={siteDetail?.bkmkIcon}
+                    onChange={(e) =>
+                      handleViewStateChange("bkmkIcon")(e.target.value)
+                    }
                   />
                 </TableCell>
               </TableRow>
@@ -157,18 +213,17 @@ function RegisterPage({ siteId }: { siteId: string }) {
                 <TableHead>기본 사이트 여부</TableHead>
                 <TableCell className="border">
                   <RadioGroup
+                    name="basicSiteYn"
                     defaultValue={siteDetail?.basicSiteYn}
-                    onValueChange={(value) => {
-                      console.log(value);
-                    }}
+                    onValueChange={handleViewStateChange("basicSiteYn")}
                   >
                     <div className="flex items-center space-x-2">
-                      <RadioGroupItem value="default" id="r1" />
-                      <Label htmlFor="r1">예</Label>
+                      <RadioGroupItem value="Y" id="basicSiteY" />
+                      <Label htmlFor="basicSiteY">예</Label>
                     </div>
                     <div className="flex items-center space-x-2">
-                      <RadioGroupItem value="comfortable" id="r2" />
-                      <Label htmlFor="r2">아니오</Label>
+                      <RadioGroupItem value="N" id="basicSiteN" />
+                      <Label htmlFor="basicSiteN">아니오</Label>
                     </div>
                   </RadioGroup>
                 </TableCell>
@@ -177,18 +232,17 @@ function RegisterPage({ siteId }: { siteId: string }) {
                 <TableHead>사용 여부</TableHead>
                 <TableCell className="border">
                   <RadioGroup
+                    name="useYn"
                     defaultValue={siteDetail?.useYn}
-                    onValueChange={(value) => {
-                      console.log(value);
-                    }}
+                    onValueChange={handleViewStateChange("useYn")}
                   >
                     <div className="flex items-center space-x-2">
-                      <RadioGroupItem value="default" id="r1" />
-                      <Label htmlFor="r1">사용</Label>
+                      <RadioGroupItem value="Y" id="useY" />
+                      <Label htmlFor="useY">사용</Label>
                     </div>
                     <div className="flex items-center space-x-2">
-                      <RadioGroupItem value="comfortable" id="r2" />
-                      <Label htmlFor="r2">사용안함</Label>
+                      <RadioGroupItem value="N" id="useN" />
+                      <Label htmlFor="useN">사용안함</Label>
                     </div>
                   </RadioGroup>
                 </TableCell>
@@ -199,7 +253,7 @@ function RegisterPage({ siteId }: { siteId: string }) {
       </div>
       <div className="flex justify-center gap-4 pb-12 pt-10">
         <Button size="lg">저장</Button>
-        <Button size="lg" color="white">
+        <Button size="lg" color="white" onClick={() => router.back()}>
           취소
         </Button>
         <Button size="lg" color="red">