diff --git a/pipeline_service/gateway.py b/pipeline_service/gateway.py
index f2675f5..491fbcb 100644
--- a/pipeline_service/gateway.py
+++ b/pipeline_service/gateway.py
@@ -83,15 +83,18 @@ class Gateway:
             db = DBPools()
             async with db.sqlorContext("pipeline") as sor:
                 recs = await sor.sqlExe(
-                    "SELECT s.current_project_id, s.default_llm_id, l.name as llm_name "
-                    "FROM pipeline_agent_settings s "
-                    "LEFT JOIN llm l ON l.id = s.default_llm_id AND l.status='active' "
-                    "WHERE s.user_id=${u}$",
+                    "SELECT current_project_id, default_llm_id FROM pipeline_agent_settings WHERE user_id=${u}$",
                     {"u": user_id})
                 if recs:
                     ctx["pid"] = getattr(recs[0], "current_project_id", "") or ""
                     ctx["default_llm_id"] = getattr(recs[0], "default_llm_id", "") or ""
-                    ctx["default_llm_name"] = getattr(recs[0], "llm_name", "") or ""
+                    # 单独查 llm.name（避免 JOIN 触发两表字段 collation 不一致）
+                    if ctx["default_llm_id"]:
+                        llm_recs = await sor.sqlExe(
+                            "SELECT name FROM llm WHERE id=${id}$ AND status='active'",
+                            {"id": ctx["default_llm_id"]})
+                        if llm_recs:
+                            ctx["default_llm_name"] = getattr(llm_recs[0], "name", "") or ""
                 if ctx["pid"]:
                     proj = await sor.sqlExe(
                         "SELECT name, pipeline_id FROM sd_projects WHERE id=${p}$",