diff --git a/src/api/conversations.ts b/src/api/conversations.ts
index bae5a19..11d3139 100644
--- a/src/api/conversations.ts
+++ b/src/api/conversations.ts
@@ -29,6 +29,10 @@ export function fetchConversation(id: number, offset = 0) {
   });
 }
 
+export function deleteConversation(id: number) {
+  return http.delete<ApiResponse<null>>(`/v1/conversations/${id}`);
+}
+
 export function sendConversationMessage(
   id: number,
   content: string,
diff --git a/src/components/layout/AppSidebar.vue b/src/components/layout/AppSidebar.vue
index 972cf6d..85d2817 100644
--- a/src/components/layout/AppSidebar.vue
+++ b/src/components/layout/AppSidebar.vue
@@ -95,6 +95,18 @@ async function openConversation(id: number) {
   }
 }
 
+async function removeConversation(item: { id: number; title: string }) {
+  if (!window.confirm(`确定删除会话“${item.title}”吗？删除后无法恢复。`)) return;
+  try {
+    await conversationStore.remove(item.id);
+    if (conversationStore.current === null) {
+      await router.push({ name: "assessment", query: { new: String(Date.now()) } });
+    }
+  } catch {
+    // The store exposes the request error.
+  }
+}
+
 function searchConversations() {
   void conversationStore.loadList(search.value.trim() || undefined);
 }
@@ -131,14 +143,15 @@ function searchConversations() {
       <p v-else-if="!conversations.length" class="sidebar-state">
         暂无历史对话
       </p>
-      <button
+      <div
         v-for="item in conversations"
         :key="item.id"
         class="sidebar-item"
         :class="{
           'sidebar-item--active': conversationStore.current?.id === item.id,
         }"
-        type="button"
+        role="button"
+        tabindex="0"
         @click="openConversation(item.id)"
       >
         <span
@@ -148,7 +161,16 @@ function searchConversations() {
         ></span>
         <span v-else class="risk-dot risk-dot--empty"></span>
         <span class="sidebar-item__label">{{ item.title }}</span>
-      </button>
+        <button
+          type="button"
+          class="sidebar-item__delete"
+          title="删除会话"
+          aria-label="删除会话"
+          @click.stop="removeConversation(item)"
+        >
+          ×
+        </button>
+      </div>
     </section>
 
     <section>
@@ -264,6 +286,32 @@ section h2 {
   white-space: nowrap;
 }
 
+.sidebar-item__delete {
+  display: none;
+  width: 22px;
+  height: 22px;
+  flex: 0 0 22px;
+  margin-left: auto;
+  border: 0;
+  border-radius: 6px;
+  background: transparent;
+  color: var(--color-text-faint);
+  font-size: 18px;
+  line-height: 1;
+  cursor: pointer;
+}
+
+.sidebar-item:hover .sidebar-item__delete,
+.sidebar-item:focus-within .sidebar-item__delete {
+  display: inline-grid;
+  place-items: center;
+}
+
+.sidebar-item__delete:hover {
+  background: var(--color-danger-subtle);
+  color: var(--color-danger);
+}
+
 .risk-dot {
   width: 5px;
   height: 5px;
diff --git a/src/stores/conversation.store.ts b/src/stores/conversation.store.ts
index 6ea9b66..618937e 100644
--- a/src/stores/conversation.store.ts
+++ b/src/stores/conversation.store.ts
@@ -3,6 +3,7 @@ import { computed, reactive, ref } from "vue";
 
 import {
   createConversation,
+  deleteConversation,
   fetchConversation,
   fetchConversations,
   withdrawConversationMessage,
@@ -132,6 +133,16 @@ export const useConversationStore = defineStore("conversation", () => {
     return current.value;
   }
 
+  async function remove(id: number) {
+    const active = current.value?.id === id;
+    await deleteConversation(id);
+    streamStates.get(id)?.controller.abort();
+    streamStates.delete(id);
+    conversationCache.delete(id);
+    items.value = items.value.filter((item) => item.id !== id);
+    if (active) current.value = null;
+  }
+
   async function send(
     content: string,
     messageType: ConversationMessageType = "text",
@@ -428,6 +439,7 @@ export const useConversationStore = defineStore("conversation", () => {
     open,
     loadOlder,
     create,
+    remove,
     send,
     streamSend,
     stopGeneration,