diff --git a/handlers/admin.py b/handlers/admin.py
index 8186753..bb79b7a 100644
--- a/handlers/admin.py
+++ b/handlers/admin.py
@@ -58,7 +58,7 @@ async def cmd_ban(update: Update, context: ContextTypes.DEFAULT_TYPE):
         await Action.create(action="BAN", user_id=user_id, username=target, operator_id=update.effective_user.id)
         reply = await update.message.reply_text(f"🔨 已封禁 {target} ({user_id}) {config.BAN_DURATION_MINUTES} 分钟")
     except Exception as e:
-        logger.exception("手动封禁失败")
+        logger.error(f"手动封禁失败: {type(e).__name__}: {e}")
         reply = await update.message.reply_text(f"❌ 封禁失败: {e}")
 
     asyncio.create_task(auto_delete(reply))
@@ -81,7 +81,7 @@ async def cmd_unban(update: Update, context: ContextTypes.DEFAULT_TYPE):
         await Action.create(action="UNBAN", user_id=user_id, username=target, operator_id=update.effective_user.id)
         reply = await update.message.reply_text(f"🔓 已解封用户 {target} ({user_id})")
     except Exception as e:
-        logger.exception("手动解封失败")
+        logger.error(f"手动解封失败: {type(e).__name__}: {e}")
         reply = await update.message.reply_text(f"❌ 解封失败: {e}")
 
     asyncio.create_task(auto_delete(reply))
@@ -140,7 +140,7 @@ async def cmd_mute(update: Update, context: ContextTypes.DEFAULT_TYPE):
         await Action.create(action="MUTE", user_id=user_id, username=target, operator_id=update.effective_user.id, details={"minutes": minutes})
         reply = await update.message.reply_text(f"🔇 已禁言 {target} ({user_id}) {minutes} 分钟")
     except Exception as e:
-        logger.exception("禁言失败")
+        logger.error(f"禁言失败: {type(e).__name__}: {e}")
         reply = await update.message.reply_text(f"❌ 禁言失败: {e}")
 
     asyncio.create_task(auto_delete(reply))
diff --git a/handlers/knowledge.py b/handlers/knowledge.py
index 9d4e056..ed0f5f4 100644
--- a/handlers/knowledge.py
+++ b/handlers/knowledge.py
@@ -121,7 +121,7 @@ async def cmd_ask(update: Update, context: ContextTypes.DEFAULT_TYPE):
         asyncio.create_task(auto_delete(reply, seconds=60))
         return
 
-    logger.info(f"📩 用户提问: [{update.message.from_user.username}] {query}")
+    logger.debug(f"📩 用户提问: [{update.message.from_user.username}] {query[:80]}")
     searching_msg = await safe_send(update, context, "🔍 正在搜索知识库并整理详细答案...")
     asyncio.create_task(auto_delete(update.message, seconds=60))
 
diff --git a/handlers/spam.py b/handlers/spam.py
index 3d28ed5..4e1958b 100644
--- a/handlers/spam.py
+++ b/handlers/spam.py
@@ -30,7 +30,7 @@ async def handle_message(update: Update, context: ContextTypes.DEFAULT_TYPE):
     username = user.username or ""
     first_name = user.first_name or ""
     text = msg.text
-    logger.info(f"💬 聊天消息 [{username or first_name or user.id}]: {text[:120]}")
+    logger.debug(f"💬 聊天消息 [{username or first_name or user.id}]: {text[:80]}")
 
     # === 防刷屏 ===
     now = datetime.now().timestamp()
diff --git a/web/api.py b/web/api.py
index d2a2f1c..edf49b9 100644
--- a/web/api.py
+++ b/web/api.py
@@ -24,7 +24,17 @@ app.mount("/static", StaticFiles(directory=str(BASE_DIR / "static")), name="stat
 # SSE
 _sse_queues: list[asyncio.Queue] = []
 _log_buffer: list[dict] = []
-MAX_LOG_BUFFER = 300
+MAX_LOG_BUFFER = 120
+MAX_LOG_MESSAGE_CHARS = 320
+
+
+def compact_log_message(record: logging.LogRecord) -> str:
+    """Web 日志只展示单行摘要，避免大段 traceback/长文本刷屏。"""
+    msg = record.getMessage().replace("\r", " ").replace("\n", " ")
+    msg = " ".join(msg.split())
+    if len(msg) > MAX_LOG_MESSAGE_CHARS:
+        msg = msg[:MAX_LOG_MESSAGE_CHARS] + "..."
+    return f"{format_dt(from_timestamp(record.created))} [{record.levelname}] {msg}"
 
 
 class SSELogHandler(logging.Handler):
@@ -35,7 +45,7 @@ class SSELogHandler(logging.Handler):
             item = {
                 "time": format_dt(from_timestamp(record.created)),
                 "level": record.levelname,
-                "message": self.format(record),
+                "message": compact_log_message(record),
             }
             _log_buffer.append(item)
             del _log_buffer[:-MAX_LOG_BUFFER]
@@ -53,8 +63,8 @@ def install_log_handler():
     if any(isinstance(h, SSELogHandler) for h in logger.handlers):
         return
     handler = SSELogHandler()
-    handler.setLevel(logging.INFO)
-    handler.setFormatter(logging.Formatter("%(asctime)s [%(levelname)s] %(message)s", "%Y-%m-%d %H:%M:%S"))
+    handler.setLevel(logging.WARNING)
+    handler.setFormatter(logging.Formatter("%(message)s"))
     logger.addHandler(handler)