diff --git a/common/src/main/java/com/tencent/supersonic/common/pojo/ParameterConfig.java b/common/src/main/java/com/tencent/supersonic/common/pojo/ParameterConfig.java
index 57321cf74..bf695e74a 100644
--- a/common/src/main/java/com/tencent/supersonic/common/pojo/ParameterConfig.java
+++ b/common/src/main/java/com/tencent/supersonic/common/pojo/ParameterConfig.java
@@ -1,7 +1,6 @@
 package com.tencent.supersonic.common.pojo;
 
 import com.tencent.supersonic.common.service.SystemConfigService;
-import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.env.Environment;
@@ -10,7 +9,6 @@ import org.springframework.stereotype.Service;
 import java.util.List;
 
 @Service
-@Slf4j
 public abstract class ParameterConfig {
 
     @Autowired
@@ -19,29 +17,28 @@ public abstract class ParameterConfig {
     @Autowired
     private Environment environment;
 
+    /**
+     * @return system parameters to be set with user interface
+     */
     protected abstract List<Parameter> getSysParameters();
 
     /**
-     * Parameter value will be derived by following orders:
+     * Parameter value will be derived in the following order:
      * 1. `system config` set with user interface
-     * 2. `system property` set with application.yaml
+     * 2. `system property` set with application.yaml file
      * 3. `default value` set with parameter declaration
-     * @param parameter
+     * @param parameter instance
      * @return parameter value
      */
     public String getParameterValue(Parameter parameter) {
         String paramName = parameter.getName();
         String value = sysConfigService.getSystemConfig().getParameterByName(paramName);
-        try {
-            if (StringUtils.isBlank(value)) {
-                if (environment.containsProperty(paramName)) {
-                    value = environment.getProperty(paramName);
-                } else {
-                    value = parameter.getDefaultValue();
-                }
+        if (StringUtils.isBlank(value)) {
+            if (environment.containsProperty(paramName)) {
+                value = environment.getProperty(paramName);
+            } else {
+                value = parameter.getDefaultValue();
             }
-        } catch (Exception e) {
-            log.error("Failed to get parameter value for {} with exception: {}", paramName, e);
         }
 
         return value;
diff --git a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/BaseMapper.java b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/BaseMapper.java
index fe297c1e8..a37518689 100644
--- a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/BaseMapper.java
+++ b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/BaseMapper.java
@@ -159,7 +159,6 @@ public abstract class BaseMapper implements SchemaMapper {
         }
         SchemaElement elementDb = dataSetSchema.getElement(elementType, elementID);
         if (Objects.isNull(elementDb)) {
-            log.warn("element is null, elementType:{},elementID:{}", elementType, elementID);
             return null;
         }
         BeanUtils.copyProperties(elementDb, element);
diff --git a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/parser/rule/RuleSqlParser.java b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/parser/rule/RuleSqlParser.java
index b59fdf00c..cd948b37c 100644
--- a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/parser/rule/RuleSqlParser.java
+++ b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/parser/rule/RuleSqlParser.java
@@ -26,7 +26,6 @@ public class RuleSqlParser implements SemanticParser {
     @Override
     public void parse(QueryContext queryContext, ChatContext chatContext) {
         if (!queryContext.getText2SQLType().enableRule()) {
-            log.info("not enable rule, skip");
             return;
         }
         SchemaMapInfo mapInfo = queryContext.getMapInfo();