diff --git a/ai_knowledge_base_v2/apps/admin-web/src/App.vue b/ai_knowledge_base_v2/apps/admin-web/src/App.vue
index 310309a..1bb6d0e 100644
--- a/ai_knowledge_base_v2/apps/admin-web/src/App.vue
+++ b/ai_knowledge_base_v2/apps/admin-web/src/App.vue
@@ -1030,10 +1030,19 @@ function buildChatQuery() {
     keyword: chatFilters.keyword,
     userId: chatFilters.userId,
     status: chatFilters.status,
-    dateFrom: chatFilters.dateFrom,
-    dateTo: chatFilters.dateTo,
+    dateFrom: formatRecordDateTime(chatFilters.dateFrom, "start"),
+    dateTo: formatRecordDateTime(chatFilters.dateTo, "end"),
   };
 }
+
+function formatRecordDateTime(value: string, boundary: "start" | "end") {
+  if (!value) return "";
+  const [date, time = ""] = value.trim().replace("T", " ").split(" ");
+  if (!date) return "";
+  const [hour = "00", minute = "00", second] = time.split(":");
+  const normalizedSecond = second ?? (boundary === "end" ? "59" : "00");
+  return `${date} ${hour.padStart(2, "0")}:${minute.padStart(2, "0")}:${normalizedSecond.padStart(2, "0")}`;
+}
 </script>
 
 <template>
@@ -1520,21 +1529,17 @@ function buildChatQuery() {
                   <el-option label="已停止" value="STOPPED" />
                   <el-option label="失败" value="FAILED" />
                 </el-select>
-                <el-date-picker
-                  v-model="chatFilters.dateFrom"
-                  class="record-date-item"
-                  type="datetime"
-                  placeholder="开始时间"
-                  value-format="YYYY-MM-DD HH:mm:ss"
-                />
-                <span class="record-date-sep">至</span>
-                <el-date-picker
-                  v-model="chatFilters.dateTo"
-                  class="record-date-item"
-                  type="datetime"
-                  placeholder="结束时间"
-                  value-format="YYYY-MM-DD HH:mm:ss"
-                />
+                <div class="record-date-range" aria-label="时间范围">
+                  <label class="record-date-field">
+                    <span>开始时间</span>
+                    <input v-model="chatFilters.dateFrom" type="datetime-local" aria-label="开始时间" />
+                  </label>
+                  <span class="record-date-sep">至</span>
+                  <label class="record-date-field">
+                    <span>结束时间</span>
+                    <input v-model="chatFilters.dateTo" type="datetime-local" aria-label="结束时间" />
+                  </label>
+                </div>
                 <div class="record-filter-actions">
                   <el-button type="primary" @click="searchChats">搜索</el-button>
                   <el-button @click="resetChatFilters">重置</el-button>
diff --git a/ai_knowledge_base_v2/apps/admin-web/src/styles.css b/ai_knowledge_base_v2/apps/admin-web/src/styles.css
index 45a9717..0c1c7df 100644
--- a/ai_knowledge_base_v2/apps/admin-web/src/styles.css
+++ b/ai_knowledge_base_v2/apps/admin-web/src/styles.css
@@ -719,8 +719,11 @@ textarea {
   width: 150px;
 }
 
-.record-date-item {
-  width: 180px;
+.record-date-range {
+  display: flex;
+  flex-wrap: nowrap;
+  gap: 8px;
+  align-items: center;
 }
 
 .record-date-sep {
@@ -729,6 +732,45 @@ textarea {
   display: flex;
   align-items: center;
   padding: 0 2px;
+  min-height: 40px;
+}
+
+.record-date-field {
+  width: 210px;
+  height: 40px;
+  display: grid;
+  grid-template-columns: auto minmax(0, 1fr);
+  align-items: center;
+  gap: 8px;
+  padding: 0 11px;
+  border: 1px solid #dcdfe6;
+  border-radius: 4px;
+  background: #ffffff;
+  color: #606266;
+}
+
+.record-date-field:focus-within {
+  border-color: #409eff;
+}
+
+.record-date-field span {
+  color: #909399;
+  font-size: 13px;
+  white-space: nowrap;
+}
+
+.record-date-field input {
+  min-width: 0;
+  border: 0;
+  outline: none;
+  background: transparent;
+  color: #303133;
+  font-size: 13px;
+}
+
+.record-date-field input::-webkit-calendar-picker-indicator {
+  cursor: pointer;
+  opacity: 0.72;
 }
 
 .record-filter-actions {