diff --git a/kag/solver/execute/sub_query_generator.py b/kag/solver/execute/sub_query_generator.py
index 830960b1..dfdbcb9b 100644
--- a/kag/solver/execute/sub_query_generator.py
+++ b/kag/solver/execute/sub_query_generator.py
@@ -1,4 +1,7 @@
 import logging
+
+from tenacity import retry, stop_after_attempt
+
 from kag.interface import KagBaseModule
 
 from kag.solver.utils import init_prompt_with_fallback
@@ -25,6 +28,7 @@ def __init__(self, **kwargs):
             "solve_question_without_spo", self.biz_scene
         )
 
+    @retry(stop=stop_after_attempt(3))
     def generate_sub_answer(
         self, question: str, knowledge_graph: [], docs: [], history=[]
     ):
diff --git a/kag/solver/main_solver.py b/kag/solver/main_solver.py
index 9743ea49..ec703a43 100644
--- a/kag/solver/main_solver.py
+++ b/kag/solver/main_solver.py
@@ -10,12 +10,14 @@
 # is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 # or implied.
 import copy
+import logging
 
 from kag.solver.logic.solver_pipeline import SolverPipeline
 from kag.solver.tools.info_processor import ReporterIntermediateProcessTool
 
 from kag.common.conf import KAG_CONFIG, KAG_PROJECT_CONF
 
+logger = logging.getLogger()
 
 class SolverMain:
     def invoke(
@@ -91,10 +93,19 @@ def invoke(
             KAG_CONFIG.all_config.get("lf_solver_pipeline", default_pipeline_config)
         )
         resp = SolverPipeline.from_config(conf)
-        answer, trace_log = resp.run(query, report_tool=report_tool)
-        print(trace_log)
+        try:
+            answer, trace_log = resp.run(query, report_tool=report_tool)
+            state = ReporterIntermediateProcessTool.STATE.FINISH
+            logger.info(f"{query} answer={answer} tracelog={trace_log}")
+        except Exception as e:
+            if KAG_PROJECT_CONF.language == 'en':
+                answer = f"Sorry, An exception occurred while processing query: {query}. Error: {str(e)}, please retry."
+            else:
+                answer = f"抱歉，处理查询 {query} 时发生异常。错误：{str(e)}, 请重试。"
+            state = ReporterIntermediateProcessTool.STATE.ERROR
+            logger.warning(f"An exception occurred while processing query: {query}. Error: {str(e)}", exc_info=True)
         report_tool.report_final_answer(
-            query, answer, ReporterIntermediateProcessTool.STATE.FINISH
+            query, answer, state
         )
         return answer
 
diff --git a/kag/solver/plan/default_lf_planner.py b/kag/solver/plan/default_lf_planner.py
index e519aeeb..398e9ca6 100644
--- a/kag/solver/plan/default_lf_planner.py
+++ b/kag/solver/plan/default_lf_planner.py
@@ -2,6 +2,8 @@
 import logging
 from typing import List
 
+from tenacity import retry, stop_after_attempt
+
 from kag.common.conf import KAG_PROJECT_CONF
 from kag.interface import LLMClient, VectorizeModelABC
 from kag.interface import PromptABC
@@ -100,6 +102,7 @@ def _parse_lf(self, question, sub_querys, logic_forms) -> List[LFPlan]:
         )
         return self._split_sub_query(parsed_logic_nodes)
 
+    @retry(stop=stop_after_attempt(3))
     def generate_logic_form(self, question: str):
         return self.llm_module.invoke(
             {"question": question},