diff --git a/vnpy/trader/vtFunction.py b/vnpy/trader/vtFunction.py
index e5b4eb71..1fc55c9a 100644
--- a/vnpy/trader/vtFunction.py
+++ b/vnpy/trader/vtFunction.py
@@ -7,13 +7,10 @@
 import os
 import decimal
 import json
+import traceback
 from datetime import datetime
 from math import isnan
 
-from vtGlobal import globalSetting
-
-MAX_NUMBER = 10000000000000
-MAX_DECIMAL = globalSetting.get('maxDecimal', 4)
 
 #----------------------------------------------------------------------
 def safeUnicode(value):
@@ -93,6 +90,29 @@ def getJsonPath(name, moduleFile):
     jsonPathDict[name] = moduleJsonPath
     return moduleJsonPath
 
+
+# 加载全局配置
+#----------------------------------------------------------------------
+def loadJsonSetting(settingFileName):
+    """加载JSON配置"""
+    settingFilePath = getJsonPath(settingFileName, __file__)
+
+    setting = {}
+
+    try:
+        with open(settingFilePath, 'rb') as f:
+            setting = f.read()
+            if type(setting) is not str:
+                setting = str(setting, encoding='utf8')
+            setting = json.loads(setting)
+    except:
+        traceback.print_exc()
+    
+    return setting
     
     
-    
+# 函数常量    
+MAX_NUMBER = 10000000000000
+
+globalSetting = loadJsonSetting('VT_setting.json')
+MAX_DECIMAL = globalSetting.get('maxDecimal', 4)
diff --git a/vnpy/trader/vtGlobal.py b/vnpy/trader/vtGlobal.py
index 420b9fa7..d9385534 100644
--- a/vnpy/trader/vtGlobal.py
+++ b/vnpy/trader/vtGlobal.py
@@ -7,20 +7,7 @@
 import os
 import traceback
 import json
-from .vtFunction import getJsonPath
-
+from .vtFunction import loadJsonSetting
 
 settingFileName = "VT_setting.json"
-settingFilePath = getJsonPath(settingFileName, __file__)
-
-globalSetting = {}      # 全局配置字典
-
-try:
-    with open(settingFilePath, 'rb') as f:
-        setting = f.read()
-        if type(setting) is not str:
-            setting = str(setting, encoding='utf8')
-        globalSetting = json.loads(setting)
-except:
-    traceback.print_exc()
-    
+globalSetting = loadJsonSetting(settingFileName)
\ No newline at end of file