diff --git a/backend/internal/api/session.go b/backend/internal/api/session.go
index 78bae2d..9690258 100644
--- a/backend/internal/api/session.go
+++ b/backend/internal/api/session.go
@@ -8,6 +8,7 @@ import (
 
 	"github.com/hhs/camtalk/internal/models"
 	"github.com/hhs/camtalk/internal/session"
+	"github.com/hhs/camtalk/internal/trace"
 )
 
 // SessionHandler 提供会话相关的 REST 端点。
@@ -27,6 +28,8 @@ type CreateSessionRequest struct {
 
 // CreateSession POST /api/sessions — 创建新会话。
 func (h *SessionHandler) CreateSession(c *gin.Context) {
+	log := trace.FromContext(c.Request.Context())
+
 	var req CreateSessionRequest
 	// 请求体可选，解析失败不报错（使用默认配置）
 	_ = c.ShouldBindJSON(&req)
@@ -38,6 +41,8 @@ func (h *SessionHandler) CreateSession(c *gin.Context) {
 
 	sessionID, err := h.sessionMgr.Create(c.Request.Context(), "", cfg)
 	if err != nil {
+		log.Errorw("create session failed",
+			"error", err)
 		c.JSON(http.StatusInternalServerError, gin.H{
 			"code":    "INTERNAL_ERROR",
 			"message": "failed to create session",
@@ -48,6 +53,9 @@ func (h *SessionHandler) CreateSession(c *gin.Context) {
 	// 获取创建后的会话以返回 created_at
 	sess, err := h.sessionMgr.Get(c.Request.Context(), sessionID)
 	if err != nil {
+		log.Errorw("retrieve created session failed",
+			"session_id", sessionID,
+			"error", err)
 		c.JSON(http.StatusInternalServerError, gin.H{
 			"code":    "INTERNAL_ERROR",
 			"message": "failed to retrieve created session",
@@ -55,6 +63,8 @@ func (h *SessionHandler) CreateSession(c *gin.Context) {
 		return
 	}
 
+	log.Infow("session created",
+		"session_id", sess.ID)
 	c.JSON(http.StatusCreated, gin.H{
 		"session_id": sess.ID,
 		"created_at": sess.CreatedAt,
@@ -63,6 +73,7 @@ func (h *SessionHandler) CreateSession(c *gin.Context) {
 
 // DestroySession DELETE /api/sessions/:id — 销毁会话。
 func (h *SessionHandler) DestroySession(c *gin.Context) {
+	log := trace.FromContext(c.Request.Context())
 	sessionID := c.Param("id")
 
 	err := h.sessionMgr.Destroy(c.Request.Context(), sessionID)
@@ -74,6 +85,9 @@ func (h *SessionHandler) DestroySession(c *gin.Context) {
 			})
 			return
 		}
+		log.Errorw("destroy session failed",
+			"session_id", sessionID,
+			"error", err)
 		c.JSON(http.StatusInternalServerError, gin.H{
 			"code":    "INTERNAL_ERROR",
 			"message": "failed to destroy session",
@@ -81,6 +95,8 @@ func (h *SessionHandler) DestroySession(c *gin.Context) {
 		return
 	}
 
+	log.Infow("session destroyed",
+		"session_id", sessionID)
 	c.Status(http.StatusNoContent)
 }