diff --git a/video-gen-admin/src/utils/formatDate.ts b/video-gen-admin/src/utils/formatDate.ts
index e6c4fe48..8fba6595 100644
--- a/video-gen-admin/src/utils/formatDate.ts
+++ b/video-gen-admin/src/utils/formatDate.ts
@@ -1,11 +1,38 @@
+const CST_OFFSET = 8 * 60; // CST = UTC+8, in minutes
+
 export function formatDate(iso: string | null | undefined): string {
   if (!iso) return '-';
-  let s = iso.trim();
-  if (!s.includes('T')) s = s.replace(' ', 'T');
-  // Truncate microseconds: 2026-05-13T15:04:04.313751 → 2026-05-13T15:04:04
-  const dotIdx = s.indexOf('.');
-  if (dotIdx > 0) s = s.slice(0, dotIdx);
-  // Remove any trailing timezone info (backend now sends naive datetimes)
-  s = s.replace(/[+-]\d{2}:?\d{0,2}$/, '').replace(/Z$/, '');
-  return s.replace('T', ' ').slice(0, 16);
+  const s = iso.trim();
+  if (!s) return '-';
+
+  // Parse the ISO string, handling timezone offset
+  // Match: 2026-05-13T15:04:04.313751+00:00 or 2026-05-13T15:04:04Z or 2026-05-13T15:04:04
+  const m = s.match(/^(\d{4})-(\d{2})-(\d{2})[T ](\d{2}):(\d{2}):(\d{2})(?:\.\d+)?(Z|[+-]\d{2}:?\d{2})?$/);
+  if (!m) return s.slice(0, 16).replace('T', ' ');
+
+  const [, year, month, day, hour, min, sec, tz] = m;
+  // Build a Date in UTC
+  const utcMs = Date.UTC(+year, +month - 1, +day, +hour, +min, +sec);
+
+  if (tz && tz !== 'Z') {
+    // Has explicit offset like +00:00 or +08:00 — already accounted for in the matched components
+    // We parsed HH:MM:SS as-is, which are in the given offset.
+    // Convert to UTC first by subtracting the offset
+    const sign = tz[0] === '+' ? 1 : -1;
+    const [oh, om] = tz.slice(1).split(':');
+    const offsetMin = sign * (+oh * 60 + +om);
+    const localMs = utcMs - offsetMin * 60000 + CST_OFFSET * 60000;
+    const d = new Date(localMs);
+    return `${d.getUTCFullYear()}-${pad(d.getUTCMonth() + 1)}-${pad(d.getUTCDate())} ${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())}`;
+  }
+
+  // No tz or Z: if Z it's UTC, if no tz it's naive (assume CST from backend)
+  const isUTC = tz === 'Z';
+  const localMs = isUTC ? utcMs + CST_OFFSET * 60000 : utcMs;
+  const d = new Date(localMs);
+  return `${d.getUTCFullYear()}-${pad(d.getUTCMonth() + 1)}-${pad(d.getUTCDate())} ${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())}`;
+}
+
+function pad(n: number): string {
+  return n < 10 ? `0${n}` : String(n);
 }
diff --git a/video-gen-api/app/api/v1/admin.py b/video-gen-api/app/api/v1/admin.py
index 604bc6ba..cea64263 100644
--- a/video-gen-api/app/api/v1/admin.py
+++ b/video-gen-api/app/api/v1/admin.py
@@ -1668,21 +1668,21 @@ async def get_stats(
     start_date: str = Query(None),
     end_date: str = Query(None),
 ):
-    today_start = datetime.now().replace(hour=0, minute=0, second=0, microsecond=0)
-    
+    today_start = datetime.now(CST).replace(hour=0, minute=0, second=0, microsecond=0)
+
     try:
         if start_date:
-            date_start = datetime.strptime(start_date, "%Y-%m-%d")
+            date_start = datetime.strptime(start_date, "%Y-%m-%d").replace(tzinfo=CST)
         else:
             date_start = today_start
         if end_date:
-            date_end = datetime.strptime(end_date, "%Y-%m-%d")
+            date_end = datetime.strptime(end_date, "%Y-%m-%d").replace(tzinfo=CST)
             date_end = date_end.replace(hour=23, minute=59, second=59, microsecond=999999)
         else:
-            date_end = datetime.now()
+            date_end = datetime.now(CST)
     except:
         date_start = today_start
-        date_end = datetime.now()
+        date_end = datetime.now(CST)
 
     total_users = (await db.execute(
         select(func.count(User.id)).where(
@@ -1983,7 +1983,7 @@ async def admin_update_generation_status(
     if body.get("image_url"):
         record.image_url = body["image_url"]
     if new_status == "completed":
-        record.generated_at = datetime.now()
+        record.generated_at = datetime.now(CST)
     await db.flush()
     await log_operation(
         db,
diff --git a/video-gen-api/app/api/v1/auth.py b/video-gen-api/app/api/v1/auth.py
index cbee25c5..d1b5ba16 100644
--- a/video-gen-api/app/api/v1/auth.py
+++ b/video-gen-api/app/api/v1/auth.py
@@ -1,4 +1,6 @@
-from datetime import datetime
+from datetime import datetime, timezone, timedelta
+
+CST = timezone(timedelta(hours=8))
 
 from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy import select
@@ -117,8 +119,8 @@ async def _handle_daily_login_credits(db: AsyncSession, user: User) -> None:
     credits = int(credits_result.scalar_one_or_none() or "0")
     if credits <= 0:
         return
-    
-    today = datetime.now().date()
+
+    today = datetime.now(CST).date()
     if user.last_login_at:
         last_login_date = user.last_login_at.date()
         if last_login_date >= today:
@@ -160,7 +162,7 @@ async def login(req: LoginRequest, db: AsyncSession = Depends(get_db)):
         )
 
     await _handle_daily_login_credits(db, user)
-    user.last_login_at = datetime.now()
+    user.last_login_at = datetime.now(CST)
     await db.flush()
     return _token_response(user, req.remember_me)
 
@@ -191,7 +193,7 @@ async def sms_login(req: SmsLoginRequest, db: AsyncSession = Depends(get_db)):
         )
 
     await _handle_daily_login_credits(db, user)
-    user.last_login_at = datetime.now()
+    user.last_login_at = datetime.now(CST)
     await db.flush()
     return _token_response(user, req.remember_me)
 
@@ -223,7 +225,7 @@ async def register(req: RegisterRequest, db: AsyncSession = Depends(get_db)):
         username=req.phone,
         phone=req.phone,
         hashed_password=hash_password(req.password),
-        password_set_at=datetime.now(),
+        password_set_at=datetime.now(CST),
         credits=register_credits,
         is_admin=False,
         user_type="frontend",
@@ -295,7 +297,7 @@ async def set_password(
         )
 
     current_user.hashed_password = hash_password(req.new_password)
-    current_user.password_set_at = datetime.now()
+    current_user.password_set_at = datetime.now(CST)
     await db.flush()
     return {"message": "密码设置成功", "must_set_password": False}
 
@@ -319,7 +321,7 @@ async def change_password(
         )
 
     current_user.hashed_password = hash_password(req.new_password)
-    current_user.password_set_at = datetime.now()
+    current_user.password_set_at = datetime.now(CST)
     await db.flush()
     return {"message": "密码修改成功"}
 
@@ -382,7 +384,7 @@ async def admin_login(req: LoginRequest, db: AsyncSession = Depends(get_db)):
             detail="该账号不是管理员账号",
         )
 
-    user.last_login_at = datetime.now()
+    user.last_login_at = datetime.now(CST)
     await db.flush()
 
     token = create_access_token(user.id, req.remember_me)
diff --git a/video-gen-api/app/api/v1/generation.py b/video-gen-api/app/api/v1/generation.py
index 92fa81a4..aac12273 100644
--- a/video-gen-api/app/api/v1/generation.py
+++ b/video-gen-api/app/api/v1/generation.py
@@ -1,7 +1,9 @@
 import json
 import logging
 import os
-from datetime import datetime
+from datetime import datetime, timezone, timedelta
+
+CST = timezone(timedelta(hours=8))
 
 from fastapi import APIRouter, Depends, HTTPException, Query, Request, UploadFile, File, status
 from fastapi.responses import RedirectResponse
@@ -733,7 +735,7 @@ async def seedance_callback(request: Request, db: AsyncSession = Depends(get_db)
                 record.video_url = remote_url
         else:
             record.video_url = remote_url
-        record.generated_at = datetime.now()
+        record.generated_at = datetime.now(CST)
         if record.video_url:
             await record_generation_record_generated_resource(
                 db,
diff --git a/video-gen-api/app/api/v1/team.py b/video-gen-api/app/api/v1/team.py
index 91345b76..88cde7c2 100644
--- a/video-gen-api/app/api/v1/team.py
+++ b/video-gen-api/app/api/v1/team.py
@@ -1,6 +1,8 @@
 from __future__ import annotations
 
-from datetime import datetime
+from datetime import datetime, timezone, timedelta
+
+CST = timezone(timedelta(hours=8))
 
 from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlalchemy import select
@@ -405,7 +407,7 @@ async def export_team_credit_records(
     from urllib.parse import quote
     output.seek(0)
     safe_team_name = team.name or "team"
-    filename = f"团队积分_{safe_team_name}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv"
+    filename = f"团队积分_{safe_team_name}_{datetime.now(CST).strftime('%Y%m%d_%H%M%S')}.csv"
     encoded_filename = quote(filename)
     return StreamingResponse(
         iter([output.getvalue()]),
diff --git a/video-gen-app/src/utils/formatDate.ts b/video-gen-app/src/utils/formatDate.ts
index c4e25f1c..0a620b89 100644
--- a/video-gen-app/src/utils/formatDate.ts
+++ b/video-gen-app/src/utils/formatDate.ts
@@ -1,12 +1,32 @@
+const CST_OFFSET = 8 * 60; // CST = UTC+8, in minutes
+
 export function formatDate(iso: string | null | undefined): string {
   if (!iso) return '-';
-  let s = iso.trim();
-  // Normalize: space → T
-  if (!s.includes('T')) s = s.replace(' ', 'T');
-  // Truncate microseconds: 2026-05-13T15:04:04.313751 → 2026-05-13T15:04:04
-  const dotIdx = s.indexOf('.');
-  if (dotIdx > 0) s = s.slice(0, dotIdx);
-  // Remove any trailing timezone info (backend now sends naive datetimes)
-  s = s.replace(/[+-]\d{2}:?\d{0,2}$/, '').replace(/Z$/, '');
-  return s.replace('T', ' ').slice(0, 16);
+  const s = iso.trim();
+  if (!s) return '-';
+
+  // Parse the ISO string, handling timezone offset
+  const m = s.match(/^(\d{4})-(\d{2})-(\d{2})[T ](\d{2}):(\d{2}):(\d{2})(?:\.\d+)?(Z|[+-]\d{2}:?\d{2})?$/);
+  if (!m) return s.slice(0, 16).replace('T', ' ');
+
+  const [, year, month, day, hour, min, sec, tz] = m;
+  const utcMs = Date.UTC(+year, +month - 1, +day, +hour, +min, +sec);
+
+  if (tz && tz !== 'Z') {
+    const sign = tz[0] === '+' ? 1 : -1;
+    const [oh, om] = tz.slice(1).split(':');
+    const offsetMin = sign * (+oh * 60 + +om);
+    const localMs = utcMs - offsetMin * 60000 + CST_OFFSET * 60000;
+    const d = new Date(localMs);
+    return `${d.getUTCFullYear()}-${pad(d.getUTCMonth() + 1)}-${pad(d.getUTCDate())} ${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())}`;
+  }
+
+  const isUTC = tz === 'Z';
+  const localMs = isUTC ? utcMs + CST_OFFSET * 60000 : utcMs;
+  const d = new Date(localMs);
+  return `${d.getUTCFullYear()}-${pad(d.getUTCMonth() + 1)}-${pad(d.getUTCDate())} ${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())}`;
+}
+
+function pad(n: number): string {
+  return n < 10 ? `0${n}` : String(n);
 }