diff --git a/src/crates/core/src/agentic/session/session_manager.rs b/src/crates/core/src/agentic/session/session_manager.rs
index 5ef39435..79622407 100644
--- a/src/crates/core/src/agentic/session/session_manager.rs
+++ b/src/crates/core/src/agentic/session/session_manager.rs
@@ -988,10 +988,34 @@ impl SessionManager {
 
         drop(session);
 
+        // Persist the turn to disk
         self.persistence_manager
             .save_dialog_turn(workspace_path, &turn)
             .await?;
 
+        // Sync messages to in-memory caches so subsequent对话 can access context
+        let user_message = Message::user(question.to_string())
+            .with_turn_id(turn_id.clone())
+            .with_semantic_kind(MessageSemanticKind::ActualUserInput);
+        let assistant_message = Message::assistant(full_text.to_string())
+            .with_turn_id(turn_id.clone());
+
+        // Add to MessageHistoryManager
+        self.history_manager
+            .add_message(child_session_id, user_message.clone())
+            .await?;
+        self.history_manager
+            .add_message(child_session_id, assistant_message.clone())
+            .await?;
+
+        // Add to CompressionManager
+        self.compression_manager
+            .add_message(child_session_id, user_message)
+            .await?;
+        self.compression_manager
+            .add_message(child_session_id, assistant_message)
+            .await?;
+
         if let Some(mut session) = self.sessions.get_mut(child_session_id) {
             if !session
                 .dialog_turn_ids