diff --git a/src/chat/planner_actions/planner.py b/src/chat/planner_actions/planner.py
index d658c15dd..54c16a269 100644
--- a/src/chat/planner_actions/planner.py
+++ b/src/chat/planner_actions/planner.py
@@ -35,7 +35,6 @@ def init_prompt():
 {mood_block}
 {time_block}
 {identity_block}
-你的核心任务是智能判断消息是否真正需要你的回应，避免强行插话或无意义的参与。只有当消息确实针对你或你能提供有价值的回应时才参与对话。
 
 {custom_prompt_block}
 {chat_context_description}，以下是具体的聊天内容
@@ -273,7 +272,7 @@ class ActionPlanner:
 
             chat_content_block, message_id_list = build_readable_messages_with_id(
                 messages=message_list_before_now,
-                timestamp_mode="normal_no_YMD",
+                timestamp_mode="normal",
                 read_mark=self.last_obs_time_mark,
                 truncate=True,
                 show_actions=True,
diff --git a/src/chat/replyer/default_generator.py b/src/chat/replyer/default_generator.py
index b7c2bf344..cf0c0a1d3 100644
--- a/src/chat/replyer/default_generator.py
+++ b/src/chat/replyer/default_generator.py
@@ -656,7 +656,7 @@ class DefaultReplyer:
             background_dialogue_prompt_str = build_readable_messages(
                 latest_25_msgs,
                 replace_bot_name=True,
-                timestamp_mode="normal_no_YMD",
+                timestamp_mode="normal",
                 truncate=True,
             )
             background_dialogue_prompt = f"这是其他用户的发言：\n{background_dialogue_prompt_str}"
@@ -670,7 +670,7 @@ class DefaultReplyer:
                 core_dialogue_list,
                 replace_bot_name=True,
                 merge_messages=False,
-                timestamp_mode="normal_no_YMD",
+                timestamp_mode="normal",
                 read_mark=0.0,
                 truncate=True,
                 show_actions=True,
@@ -953,7 +953,7 @@ class DefaultReplyer:
                 unified_message_list,
                 replace_bot_name=True,
                 merge_messages=False,
-                timestamp_mode="normal_no_YMD",
+                timestamp_mode="normal",
                 read_mark=0.0,
                 truncate=True,
                 show_actions=True,
diff --git a/src/config/official_configs.py b/src/config/official_configs.py
index 9ebbc0a74..148d8ed8c 100644
--- a/src/config/official_configs.py
+++ b/src/config/official_configs.py
@@ -190,6 +190,14 @@ class ChatConfig(ConfigBase):
     
     planner_custom_prompt_content: str = ""
     """决策器自定义提示词内容，仅在planner_custom_prompt_enable为True时生效"""
+    
+    timestamp_display_mode: Literal["normal", "normal_no_YMD", "relative"] = "normal_no_YMD"
+    """
+    消息时间戳显示模式：
+    - normal: 完整日期时间格式 (YYYY-MM-DD HH:MM:SS)
+    - normal_no_YMD: 仅显示时间 (HH:MM:SS)
+    - relative: 相对时间格式 (几分钟前/几小时前等)
+    """
 
     def get_current_talk_frequency(self, chat_stream_id: Optional[str] = None) -> float:
         """