diff --git a/backend/internal/auth/codex_api.go b/backend/internal/auth/codex_api.go
index ecf250c..1135ed2 100644
--- a/backend/internal/auth/codex_api.go
+++ b/backend/internal/auth/codex_api.go
@@ -379,11 +379,24 @@ func (c *CodexAPIAuth) ObtainAuthorizationCode() (string, error) {
 
 	// 解析 continue_url
 	wsResp, _ := client.ReadBody(resp)
+	c.logStep(StepSelectWorkspace, "工作区响应: %s", string(wsResp))
+
 	var wsResult struct {
 		ContinueURL string `json:"continue_url"`
+		Page        struct {
+			Type string `json:"type"`
+		} `json:"page"`
+		Error   string `json:"error"`
+		Message string `json:"message"`
 	}
-	if err := json.Unmarshal(wsResp, &wsResult); err != nil || wsResult.ContinueURL == "" {
-		c.logError(StepSelectWorkspace, "未获取到 continue_url")
+	if err := json.Unmarshal(wsResp, &wsResult); err != nil {
+		c.logError(StepSelectWorkspace, "解析响应失败: %v, 原始: %s", err, string(wsResp))
+		return "", fmt.Errorf("解析响应失败: %v", err)
+	}
+
+	if wsResult.ContinueURL == "" {
+		c.logError(StepSelectWorkspace, "未获取到 continue_url, page=%s, error=%s, msg=%s",
+			wsResult.Page.Type, wsResult.Error, wsResult.Message)
 		return "", fmt.Errorf("未获取到 continue_url")
 	}