diff --git a/apps/st/src/components/statistics/management/StatisticsInputPeriodDialog.tsx b/apps/st/src/components/statistics/management/StatisticsInputPeriodDialog.tsx
index 6ebcfc66e..f560fd717 100644
--- a/apps/st/src/components/statistics/management/StatisticsInputPeriodDialog.tsx
+++ b/apps/st/src/components/statistics/management/StatisticsInputPeriodDialog.tsx
@@ -19,7 +19,6 @@ import {
     DialogHeader,
     DialogTitle,
     Input,
-    InputDatePicker,
     Label,
     Select,
     SelectContent,
@@ -48,9 +47,32 @@ function normalizeStatsYrInput(raw: string): string {
 function formatDateToYmd(d: Date | undefined): string | null {
     if (!d || Number.isNaN(d.getTime())) return null;
     const y = d.getFullYear();
+    if (y < 1000 || y > 9999) return null;
     const m = String(d.getMonth() + 1).padStart(2, "0");
     const day = String(d.getDate()).padStart(2, "0");
-    return `${y}${m}${day}`;
+    return `${String(y).padStart(4, "0")}${m}${day}`;
+}
+
+/** Chrome `type="date"`는 max가 없으면 연도를 6자리까지 받음 */
+const PERIOD_DATE_INPUT_MIN = "1000-01-01";
+const PERIOD_DATE_INPUT_MAX = "9999-12-31";
+
+function formatDateToInputValue(d: Date | undefined): string {
+    if (!d || Number.isNaN(d.getTime())) return "";
+    const ymd = formatDateToYmd(d);
+    if (!ymd) return "";
+    return `${ymd.slice(0, 4)}-${ymd.slice(4, 6)}-${ymd.slice(6, 8)}`;
+}
+
+function parseFourDigitYearDate(raw: string): Date | undefined {
+    const match = /^(\d{4})-(\d{2})-(\d{2})$/.exec(raw);
+    if (!match) return undefined;
+    const year = Number(match[1]);
+    const month = Number(match[2]);
+    const day = Number(match[3]);
+    const parsed = new Date(year, month - 1, day);
+    if (Number.isNaN(parsed.getTime()) || parsed.getFullYear() !== year) return undefined;
+    return parsed;
 }
 
 export interface StatisticsInputPeriodDialogProps {
@@ -281,18 +303,26 @@ export function StatisticsInputPeriodDialog({
                     )}
                     <div className="flex flex-col gap-2">
                         <Label className="text-label">시작일</Label>
-                        <InputDatePicker
-                            value={bgngYmd}
-                            onChange={setBgngYmd}
-                            className="w-full"
+                        <Input
+                            type="date"
+                            min={PERIOD_DATE_INPUT_MIN}
+                            max={PERIOD_DATE_INPUT_MAX}
+                            value={formatDateToInputValue(bgngYmd)}
+                            onChange={(e) => setBgngYmd(parseFourDigitYearDate(e.target.value))}
+                            disabled={isSubmitting}
+                            className="!text-[1.3rem] w-full"
                         />
                     </div>
                     <div className="flex flex-col gap-2">
                         <Label className="text-label">종료일</Label>
-                        <InputDatePicker
-                            value={endYmd}
-                            onChange={setEndYmd}
-                            className="w-full"
+                        <Input
+                            type="date"
+                            min={PERIOD_DATE_INPUT_MIN}
+                            max={PERIOD_DATE_INPUT_MAX}
+                            value={formatDateToInputValue(endYmd)}
+                            onChange={(e) => setEndYmd(parseFourDigitYearDate(e.target.value))}
+                            disabled={isSubmitting}
+                            className="!text-[1.3rem] w-full"
                         />
                     </div>
                 </div>