diff --git a/apps/st/src/components/module/DataGrid.tsx b/apps/st/src/components/module/DataGrid.tsx
index d99127482..55b98a48c 100644
--- a/apps/st/src/components/module/DataGrid.tsx
+++ b/apps/st/src/components/module/DataGrid.tsx
@@ -25,6 +25,8 @@ import type {
 import { getComputedValueCallback } from "@/components/util/grid/computedFieldCallbacks";
 import {
     getExcelImportColumnFieldNames,
+    getNonEditableColumnFieldNames,
+    mergeExcelImportWithExistingRows,
     prepareGridColumnsForExcelExport,
     restoreGridColumnsAfterExcelExport,
     shouldPrepareColumnsForExcelExport,
@@ -727,6 +729,7 @@ const DataGrid = ({
     rowStartNum,
     excelExportFileSuffix,
     isExcelImport = true,
+    excelImportSkipNonEditable = true,
     isExcelExport = true,
     fixedColumns,
     showHeaderCheckbox = false,
@@ -1070,6 +1073,7 @@ useEffect(() => {
                     const excelColumnFieldNames = getExcelImportColumnFieldNames(
                         columns,
                         columnLayout,
+                        { skipNonEditable: excelImportSkipNonEditable },
                     );
 
                     // 데이터 행 읽기
@@ -1137,7 +1141,14 @@ useEffect(() => {
                             dataRows.push(rowData);
                         }
                     }
-                    setRowData(dataRows);
+                    const preserveFieldNames = excelImportSkipNonEditable
+                        ? getNonEditableColumnFieldNames(columns, columnLayout)
+                        : [];
+                    setRowData((prev) =>
+                        mergeExcelImportWithExistingRows(prev, dataRows, {
+                            preserveFieldNames,
+                        }),
+                    );
                 } catch (error) {
                     console.error("엑셀 파일 파싱 오류:", error);
                     alert("엑셀 파일 파싱 중 오류가 발생했습니다.");
@@ -1263,6 +1274,11 @@ useEffect(() => {
                 "editable",
                 column.editable !== false,
             );
+            gv.setColumnProperty?.(
+                column.name,
+                "styleName",
+                column.styleName ?? "",
+            );
             applyColumnListEditorProperties(gv, column);
         });
         if (columns.some((c) => isDropDownEditorColumn(c))) {
@@ -1481,12 +1497,10 @@ useEffect(() => {
                             fieldName: col.fieldName,
                             header: realGridHeaderWithTooltip(col.header),
                             editable: col.editable,
+                            styleName: col.styleName ?? "",
                             valueType: col.valueType,
                             dataFormat: col.dataFormat,
                             ...(col.width != null && { width: col.width }),
-                            ...(col.styleName != null && {
-                                styleName: col.styleName,
-                            }),
                             ...(col.mergeCells && {
                                 mergeRule: { criteria: "value" as const },
                             }),
diff --git a/apps/st/src/components/module/TabDataGrid.tsx b/apps/st/src/components/module/TabDataGrid.tsx
index 6b7eacc87..23b5d916d 100644
--- a/apps/st/src/components/module/TabDataGrid.tsx
+++ b/apps/st/src/components/module/TabDataGrid.tsx
@@ -36,6 +36,8 @@ import SplitDataGrid from "./SplitDataGrid";
 import { getComputedValueCallback } from "@/components/util/grid/computedFieldCallbacks"
 import {
     getExcelImportColumnFieldNames,
+    getNonEditableColumnFieldNames,
+    mergeExcelImportWithExistingRows,
     prepareGridColumnsForExcelExport,
     restoreGridColumnsAfterExcelExport,
     shouldPrepareColumnsForExcelExport,
@@ -277,6 +279,7 @@ function createNumberComparer(dp: RealGridDataProviderComparer): (field: string
 const TabDataGrid = ({
     columnInfo,
     isExcelImport = true,
+    excelImportSkipNonEditable = true,
     isExcelExport = true,
     rows = [],
     showHeaderCheckbox = false,
@@ -552,6 +555,7 @@ const TabDataGrid = ({
                     const excelColumnFieldNames = getExcelImportColumnFieldNames(
                         columns,
                         columnLayout,
+                        { skipNonEditable: excelImportSkipNonEditable },
                     );
 
                     // 데이터 행 읽기
@@ -596,9 +600,19 @@ const TabDataGrid = ({
                         }
                     }
 
+                    const preserveFieldNames = excelImportSkipNonEditable
+                        ? getNonEditableColumnFieldNames(columns, columnLayout)
+                        : [];
+
                     setRowDataMap(prev => {
                         const newMap = new Map(prev);
-                        newMap.set(tabKey, dataRows);
+                        const existingRows = prev.get(tabKey) ?? [];
+                        newMap.set(
+                            tabKey,
+                            mergeExcelImportWithExistingRows(existingRows, dataRows, {
+                                preserveFieldNames,
+                            }),
+                        );
                         return newMap;
                     });
                 } catch (error) {
diff --git a/apps/st/src/components/statistics/input/PublicSewageFacilityInp.tsx b/apps/st/src/components/statistics/input/PublicSewageFacilityInp.tsx
index 8b24a86eb..87ba1d8bd 100644
--- a/apps/st/src/components/statistics/input/PublicSewageFacilityInp.tsx
+++ b/apps/st/src/components/statistics/input/PublicSewageFacilityInp.tsx
@@ -555,7 +555,7 @@ const PublicSewageFacilityInp = () => {
                         sggNm: lastSearchedValues.gugun === 'ALL' ? '' : lastSearchedValues.gugun ?? '',
                         sewerBzmnCd: lastSearchedValues.bsnmCd ?? '',
                         userId: userInfo.userUnqId,
-                        // superAdmin: isAdminInfo ? 'superAdmin' : '',
+                        superAdmin: isAdminInfo ? 'superAdmin' : '',
                         noApplicable,
                         saveList,
                     };
diff --git a/apps/st/src/components/statistics/input/SewagePipeInp.tsx b/apps/st/src/components/statistics/input/SewagePipeInp.tsx
index a042a51f8..7b6ff77e1 100644
--- a/apps/st/src/components/statistics/input/SewagePipeInp.tsx
+++ b/apps/st/src/components/statistics/input/SewagePipeInp.tsx
@@ -108,6 +108,48 @@ const getPipeTypeLastDataYear = () => {
     return Math.max(1995, lastDataYear);
 };
 
+const PIPE_TYPE_STATUS_TAB_KEY = "ST00020003";
+
+/** 조회 연도(statsYr)에 해당하는 연도별 매설연장 필드명 (y{year}LyngPrlg) */
+const resolvePipeTypeEditableLyngField = (statsYr: string | null | undefined): string | null => {
+    if (!statsYr) return null;
+    const year = Number(statsYr);
+    if (!Number.isFinite(year)) return null;
+    const clamped = Math.min(getPipeTypeLastDataYear(), Math.max(1995, year));
+    return `y${clamped}LyngPrlg`;
+};
+
+/** ST00020003: 입력기간 통과 시 조회 연도의 매설연장(y{year}LyngPrlg)만 편집 가능 */
+const applyPipeTypeStatusEditableColumns = (
+    cols: ColumnConfig[] | undefined,
+    canEdit: boolean,
+    periodEnterable: boolean,
+    statsYr: string | null,
+): ColumnConfig[] =>
+    (cols ?? []).map((col) => {
+        if (!canEdit) {
+            return { ...col, editable: false as const, styleName: col.styleName ?? "rg-cell-readonly" };
+        }
+
+        const fieldName = col.fieldName ?? col.name;
+        const isYearLyngField =
+            fieldName !== "lyngPrlg" && typeof fieldName === "string" && fieldName.endsWith("LyngPrlg");
+        if (fieldName === "lyngPrlg" || isYearLyngField) {
+            const editableLyngField = periodEnterable ? resolvePipeTypeEditableLyngField(statsYr) : null;
+            const isTargetYear = editableLyngField !== null && fieldName === editableLyngField;
+            if (isTargetYear) {
+                const { styleName: _readonlyStyle, ...rest } = col;
+                return {
+                    ...rest,
+                    editable: true as const,
+                };
+            }
+            return { ...col, editable: false as const, styleName: col.styleName ?? "rg-cell-readonly" };
+        }
+
+        return col;
+    });
+
 const getManholeLastDataYear = () => {
     const lastDataYear = new Date().getFullYear() - 1;
     return Math.max(2014, lastDataYear);
@@ -507,11 +549,22 @@ const SewagePipeInp = () => {
             const canEdit =
                 computeTabEnterable(tabStatusInfoMap.get(tab.tabKey) ?? null, inputPeriodEnterable) || isAdminInfo;
             const applyEditable = (cols: ColumnConfig[] | undefined) =>
-                (cols ?? []).map((col: ColumnConfig) =>
-                    canEdit
-                        ? col
-                        : { ...col, editable: false as const, styleName: col.styleName ?? "rg-cell-readonly" }
-                );
+                tab.tabKey === PIPE_TYPE_STATUS_TAB_KEY
+                    ? applyPipeTypeStatusEditableColumns(
+                          cols,
+                          canEdit,
+                          inputPeriodEnterable,
+                          lastSearchedYear,
+                      )
+                    : (cols ?? []).map((col: ColumnConfig) =>
+                          canEdit
+                              ? col
+                              : {
+                                    ...col,
+                                    editable: false as const,
+                                    styleName: col.styleName ?? "rg-cell-readonly",
+                                },
+                      );
 
             if (tab.left && tab.right) {
                 return {
@@ -525,7 +578,7 @@ const SewagePipeInp = () => {
                 columns: applyColumnGuides(applyEditable(tab.columns), tab.tabKey),
             };
         });
-    }, [tabStatusInfoMap, isAdminInfo, inputPeriodEnterable, columnGuidesByTab]);
+    }, [tabStatusInfoMap, isAdminInfo, inputPeriodEnterable, columnGuidesByTab, lastSearchedYear]);
 
     const commitToolbarSnapshotForLoadedTab = (
         tabKey: string,
@@ -1546,7 +1599,7 @@ const SewagePipeInp = () => {
                         sggNm: values.gugun === "ALL" ? "" : (values.gugun ?? ""),
                         sewerBzmnCd: values.bsnmCd ?? "",
                         userId: userInfo.userUnqId,
-                        // superAdmin: isAdminInfo ? "superAdmin" : "",
+                        superAdmin: isAdminInfo ? "superAdmin" : "",
                         saveList,
                     };
 
@@ -1626,7 +1679,7 @@ const SewagePipeInp = () => {
                         sggNm: values.gugun === "ALL" ? "" : (values.gugun ?? ""),
                         sewerBzmnCd: values.bsnmCd ?? "",
                         userId: userInfo.userUnqId,
-                        // superAdmin: isAdminInfo ? "superAdmin" : "",
+                        superAdmin: isAdminInfo ? "superAdmin" : "",
                         saveList,
                     };
 
@@ -1711,7 +1764,7 @@ const SewagePipeInp = () => {
                         sggNm: values.gugun === "ALL" ? "" : (values.gugun ?? ""),
                         sewerBzmnCd: values.bsnmCd ?? "",
                         userId: userInfo.userUnqId,
-                        // superAdmin: isAdminInfo ? "superAdmin" : "",
+                        superAdmin: isAdminInfo ? "superAdmin" : "",
                         saveList,
                     };
 
@@ -1774,7 +1827,7 @@ const SewagePipeInp = () => {
                         sggNm: values.gugun === "ALL" ? "" : (values.gugun ?? ""),
                         sewerBzmnCd: values.bsnmCd ?? "",
                         userId: userInfo.userUnqId,
-                        // superAdmin: isAdminInfo ? "superAdmin" : "",
+                        superAdmin: isAdminInfo ? "superAdmin" : "",
                         saveList,
                     };
 
@@ -1853,7 +1906,7 @@ const SewagePipeInp = () => {
                         sggNm: values.gugun === "ALL" ? "" : (values.gugun ?? ""),
                         sewerBzmnCd: values.bsnmCd ?? "",
                         userId: userInfo.userUnqId,
-                        // superAdmin: isAdminInfo ? "superAdmin" : "",
+                        superAdmin: isAdminInfo ? "superAdmin" : "",
                         saveList,
                     };
 
@@ -2080,6 +2133,9 @@ const SewagePipeInp = () => {
                                         });
                                     }}
                                     isExcelImport={excelToolbarEnabledForTab}
+                                    excelImportSkipNonEditable={
+                                        tabKey === PIPE_TYPE_STATUS_TAB_KEY ? !isAdminInfo : true
+                                    }
                                     isExcelExport
                                     showHeaderCheckbox={false}
                                     fixedColumns={info.fixedColumns}
diff --git a/apps/st/src/components/statistics/input/SeweragePenetrationRateInp.tsx b/apps/st/src/components/statistics/input/SeweragePenetrationRateInp.tsx
index fa4b09ee7..61ae738a9 100644
--- a/apps/st/src/components/statistics/input/SeweragePenetrationRateInp.tsx
+++ b/apps/st/src/components/statistics/input/SeweragePenetrationRateInp.tsx
@@ -353,9 +353,9 @@ const SeweragePenetrationRateInp = () => {
             statsCd: statsCd,
         };
 
-        // if (isAdminInfo) {
-        //     params.superAdmin = 'superAdmin';
-        // }
+        if (isAdminInfo) {
+            params.superAdmin = 'superAdmin';
+        }
 
         try {
             setIsLoading(true);
@@ -682,9 +682,9 @@ const SeweragePenetrationRateInp = () => {
                     sewerBzmnFrgnrWholPpltnCnt: footerFromApi?.sewerBzmnFrgnrWholPpltnCnt // 행정참고자료 외국인 합계
                 };
 
-                // if (isAdminInfo) {
-                //     requestData.superAdmin = 'superAdmin';
-                // }
+                if (isAdminInfo) {
+                    requestData.superAdmin = 'superAdmin';
+                }
 
                 const response = await statisticsInputSewSupplyRateApi.saveSewerageSupplyRate(requestData);
 
diff --git a/apps/st/src/components/type/DataGrid.type.ts b/apps/st/src/components/type/DataGrid.type.ts
index 00e4fbb01..02b7e3b1a 100644
--- a/apps/st/src/components/type/DataGrid.type.ts
+++ b/apps/st/src/components/type/DataGrid.type.ts
@@ -380,6 +380,8 @@ export type DataGridProps = {
     /** 있으면보내기 파일명: `{메뉴명}_{suffix}.xlsx` (TabDataGrid의 탭 라벨 접미사와 동일) */
     excelExportFileSuffix?: string;
     isExcelImport?: boolean; // 엑셀 가져오기 유무
+    /** 엑셀 가져오기 시 editable:false 컬럼 값 무시 (기본 true) */
+    excelImportSkipNonEditable?: boolean;
     isExcelExport?: boolean;
     onRowsChange?: (rows: Record<string, string | number>[]) => void;
     fixedColumns?: number; // 고정할 컬럼 개수 (좌측부터)
@@ -432,6 +434,8 @@ export type TabDataGridProps = {
     columnInfo: ColumnInfoList[];
     rows?: Record<string, string | number>[];
     isExcelImport?: boolean; // 엑셀 가져오기 유무
+    /** 엑셀 가져오기 시 editable:false 컬럼 값 무시 (기본 true) */
+    excelImportSkipNonEditable?: boolean;
     isExcelExport?: boolean;
     onRowsChange?: (rows: Record<string, string | number>[]) => void;
     showHeaderCheckbox?: boolean; // 헤더 체크박스 표시 여부 (기본값: true)
diff --git a/apps/st/src/components/util/gridExcelExport.ts b/apps/st/src/components/util/gridExcelExport.ts
index 983d4ba5a..60978c41e 100644
--- a/apps/st/src/components/util/gridExcelExport.ts
+++ b/apps/st/src/components/util/gridExcelExport.ts
@@ -28,14 +28,22 @@ function flattenColumnLayoutNames(layout: ColumnLayoutItem[]): string[] {
     return result;
 }
 
+export type ExcelImportColumnFieldNamesOptions = {
+    /** false면 editable:false 컬럼도 import (기본 true — 읽기전용·계산 컬럼은 엑셀 값 무시) */
+    skipNonEditable?: boolean;
+};
+
 /** 엑셀 가져오기 — N번째 열을 그리드 N번째 fieldName에 매핑 (보내기 컬럼 순서와 동일) */
 export function getExcelImportColumnFieldNames(
     columns: ColumnConfig[],
     columnLayout?: ColumnLayoutItem[],
+    options?: ExcelImportColumnFieldNamesOptions,
 ): string[] {
+    const skipNonEditable = options?.skipNonEditable !== false;
     const excludedNames = new Set(
         columns.filter((c) => c.excludeFromExcelExport).map((c) => c.name),
     );
+    const columnByName = new Map(columns.map((c) => [c.name, c]));
     const fieldByName = new Map(
         columns
             .filter((c) => c.fieldName)
@@ -54,11 +62,72 @@ export function getExcelImportColumnFieldNames(
         const fieldName = fieldByName.get(name);
         if (!fieldName) continue;
         seen.add(name);
+        const col = columnByName.get(name);
+        if (skipNonEditable && col?.editable === false) {
+            fieldNames.push("");
+            continue;
+        }
         fieldNames.push(fieldName);
     }
     return fieldNames;
 }
 
+/** 엑셀 import 시 기존 값을 유지할 fieldName 목록 (editable:false) */
+export function getNonEditableColumnFieldNames(
+    columns: ColumnConfig[],
+    columnLayout?: ColumnLayoutItem[],
+): string[] {
+    const excludedNames = new Set(
+        columns.filter((c) => c.excludeFromExcelExport).map((c) => c.name),
+    );
+    const columnByName = new Map(columns.map((c) => [c.name, c]));
+
+    const layoutNames =
+        columnLayout && columnLayout.length > 0
+            ? flattenColumnLayoutNames(columnLayout)
+            : columns.map((c) => c.name);
+
+    const seen = new Set<string>();
+    const fieldNames: string[] = [];
+    for (const name of layoutNames) {
+        if (excludedNames.has(name) || seen.has(name)) continue;
+        const col = columnByName.get(name);
+        const fieldName = col?.fieldName;
+        if (!fieldName || col.editable !== false) continue;
+        seen.add(name);
+        fieldNames.push(fieldName);
+    }
+    return fieldNames;
+}
+
+/** 엑셀 import 결과를 기존 행과 병합 — preserveFieldNames는 기존 그리드 값 유지 */
+export function mergeExcelImportWithExistingRows(
+    existingRows: Record<string, string | number>[],
+    importedRows: Record<string, string | number>[],
+    options?: { preserveFieldNames?: readonly string[] },
+): Record<string, string | number>[] {
+    const preserveSet =
+        options?.preserveFieldNames && options.preserveFieldNames.length > 0
+            ? new Set(options.preserveFieldNames)
+            : null;
+
+    return importedRows.map((importedRow, index) => {
+        const existingRow = existingRows[index];
+        if (!existingRow) return { ...importedRow };
+
+        const merged: Record<string, string | number> = { ...existingRow, ...importedRow };
+        if (preserveSet) {
+            for (const fieldName of preserveSet) {
+                const preserved = existingRow[fieldName];
+                if (preserved !== undefined) {
+                    merged[fieldName] = preserved;
+                }
+            }
+        }
+        return merged;
+    });
+}
+
 export type ExcelExportVisibilitySnapshot = Map<string, boolean>;
 
 /** 엑셀보내기 직전: 제외 컬럼 숨김, 그리드용 숨김(visible:false) 컬럼은 export에만 표시 */