diff --git a/src/pages/worklog/WorkLogPage.tsx b/src/pages/worklog/WorkLogPage.tsx
index bb42fab..f567f82 100644
--- a/src/pages/worklog/WorkLogPage.tsx
+++ b/src/pages/worklog/WorkLogPage.tsx
@@ -138,6 +138,49 @@ const toNumber = (value: unknown, fallback = 0) => {
 
 const formatDay = (value: Dayjs) => value.format(DAY_VALUE_FORMAT);
 
+const NON_WORKING_HOLIDAYS = new Set([
+  '2026-01-01',
+  '2026-02-16',
+  '2026-02-17',
+  '2026-02-18',
+  '2026-02-19',
+  '2026-02-20',
+  '2026-04-05',
+  '2026-05-01',
+  '2026-05-02',
+  '2026-05-03',
+  '2026-06-19',
+  '2026-09-25',
+  '2026-10-01',
+  '2026-10-02',
+  '2026-10-03',
+  '2026-10-04',
+  '2026-10-05',
+  '2026-10-06',
+  '2026-10-07',
+]);
+
+const MAKEUP_WORKDAYS = new Set([
+  '2026-02-15',
+  '2026-02-28',
+  '2026-04-26',
+  '2026-05-09',
+  '2026-09-27',
+  '2026-10-10',
+]);
+
+const isNonWorkingDay = (value: Dayjs) => {
+  const dayKey = value.format('YYYY-MM-DD');
+  if (MAKEUP_WORKDAYS.has(dayKey)) {
+    return false;
+  }
+  if (NON_WORKING_HOLIDAYS.has(dayKey)) {
+    return true;
+  }
+  const weekday = value.day();
+  return weekday === 0 || weekday === 6;
+};
+
 const pickProjectBoundaryDate = (row: ProjectRow, keys: Array<keyof ProjectRow>) => {
   for (const key of keys) {
     const raw = row[key];
@@ -1194,6 +1237,7 @@ const WorkLogPage = () => {
       const dayKey = formatDay(current);
       const record = monthCellMap.get(dayKey);
       const isFuture = current.isAfter(dayjs(), 'day');
+      const isNonWorking = isNonWorkingDay(current);
       const hasLog = record !== undefined && toNumber(record.state, -1) !== -1;
       const isTimeout = record !== undefined && toNumber(record.state, -1) === -1 && current.isBefore(dayjs(), 'day');
       const isSelected = current.format('YYYY-MM-DD') === selectedDayOnly;
@@ -1202,6 +1246,7 @@ const WorkLogPage = () => {
         key: dayKey,
         current,
         isFuture,
+        isNonWorking,
         hasLog,
         isTimeout,
         isSelected,
@@ -1475,6 +1520,10 @@ const WorkLogPage = () => {
               <i className="worklog-legend-dot is-timeout" />
               超期未填
             </span>
+            <span className="worklog-legend-item">
+              <i className="worklog-legend-dot is-non-working" />
+              非工作日
+            </span>
           </div>
 
           <Spin spinning={monthLoading}>
@@ -1485,7 +1534,7 @@ const WorkLogPage = () => {
                   item.isSelected ? 'is-selected' : '',
                   item.hasLog ? 'is-has-log' : '',
                   item.isTimeout ? 'is-timeout' : '',
-                  item.isFuture ? 'is-disabled' : '',
+                  item.isFuture || item.isNonWorking ? 'is-disabled' : '',
                 ]
                   .filter(Boolean)
                   .join(' ');
diff --git a/src/pages/worklog/worklog.css b/src/pages/worklog/worklog.css
index 4377c6b..da5e671 100644
--- a/src/pages/worklog/worklog.css
+++ b/src/pages/worklog/worklog.css
@@ -173,6 +173,10 @@
   background: #ffb74d;
 }
 
+.worklog-legend-dot.is-non-working {
+  background: #c0c4cc;
+}
+
 .worklog-calendar-strip {
   grid-area: meta;
   border: 1px solid #edf2fb;
@@ -219,6 +223,13 @@
   box-shadow: none;
 }
 
+.worklog-strip-day.is-disabled:not(.is-selected) {
+  color: #c0c4cc;
+  background: #f8fafc;
+  border-color: #e5e7eb;
+  box-shadow: none;
+}
+
 .worklog-strip-day.is-selected {
   background: linear-gradient(135deg, #635bff 0%, #4f46e5 100%);
   color: #fff;
@@ -237,6 +248,12 @@
   color: #8b4f00;
 }
 
+.worklog-strip-day.is-disabled.is-timeout:not(.is-selected) {
+  color: #c0c4cc;
+  background: #f8fafc;
+  border-color: #e5e7eb;
+}
+
 .worklog-strip-weekday {
   font-size: 11px;
   color: #8190a7;
@@ -259,6 +276,11 @@
   color: rgba(255, 255, 255, 0.82);
 }
 
+.worklog-strip-day.is-disabled:not(.is-selected) .worklog-strip-weekday,
+.worklog-strip-day.is-disabled:not(.is-selected) .worklog-strip-meta {
+  color: #a8b3c4;
+}
+
 .worklog-main-top {
   display: grid;
   grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);