diff --git a/cmds/cmd_menuconfig.py b/cmds/cmd_menuconfig.py
index c433464d..a679ffac 100644
--- a/cmds/cmd_menuconfig.py
+++ b/cmds/cmd_menuconfig.py
@@ -29,7 +29,7 @@
 import platform
 import re
 from vars import Import
-from .cmd_package.cmd_package_utils import find_bool_macro_in_config
+from .cmd_package.cmd_package_utils import find_bool_macro_in_config, find_IAR_EXEC_PATH, find_MDK_EXEC_PATH
 
 
 def is_pkg_special_config(config_str):
@@ -227,15 +227,27 @@ def cmd(args):
             print("==============================>The packages have been updated completely.")
 
         if find_bool_macro_in_config(fn, 'SYS_CREATE_MDK_IAR_PROJECT'):
+            mdk_path = find_MDK_EXEC_PATH()
+            iar_path = find_IAR_EXEC_PATH()
+
             if find_bool_macro_in_config(fn, 'SYS_CREATE_MDK4'):
-                os.system('scons --target=mdk4 -s')
-                print("Create mdk4 project done")
+                if mdk_path:
+                    os.system('scons --target=mdk4 -s --exec-path="' + mdk_path+'"')
+                else:
+                    os.system('scons --target=mdk4 -s')
+                print("Create Keil-MDK4 project done")
             elif find_bool_macro_in_config(fn, 'SYS_CREATE_MDK5'):
-                os.system('scons --target=mdk5 -s')
-                print("Create mdk5 project done")
+                if mdk_path:
+                    os.system('scons --target=mdk5 -s --exec-path="' + mdk_path+'"')
+                else:
+                     os.system('scons --target=mdk5 -s')
+                print("Create Keil-MDK5 project done")
             elif find_bool_macro_in_config(fn, 'SYS_CREATE_IAR'):
-                os.system('scons --target=iar -s')
-                print("Create iar project done")
+                if iar_path:
+                    os.system('scons --target=iar -s --exec-path="' + iar_path+'"')
+                else:
+                    os.system('scons --target=iar -s')
+                print("Create IAR project done")
 
 
 def add_parser(sub):
diff --git a/cmds/cmd_package/__init__.py b/cmds/cmd_package/__init__.py
index 22bb2a17..78d005aa 100644
--- a/cmds/cmd_package/__init__.py
+++ b/cmds/cmd_package/__init__.py
@@ -26,21 +26,11 @@
 # 2020-04-08     SummerGift      Optimize program structure
 #
 
-import os
 from .cmd_package_printenv import package_print_env, package_print_help
 from .cmd_package_list import list_packages
 from .cmd_package_wizard import package_wizard
 from .cmd_package_update import package_update
 from .cmd_package_upgrade import package_upgrade, package_upgrade_modules
-from .cmd_package_utils import find_IAR_EXEC_PATH, find_MDK_EXEC_PATH
-
-iar_exec_path = find_IAR_EXEC_PATH()
-if iar_exec_path:
-    os.environ['RTT_EXEC_PATH'] = iar_exec_path
-
-mdk_exec_path = find_MDK_EXEC_PATH()
-if mdk_exec_path:
-    os.environ['RTT_EXEC_PATH'] = mdk_exec_path
 
 def run_env_cmd(args):
     """Run packages command."""
diff --git a/cmds/cmd_package/cmd_package_utils.py b/cmds/cmd_package/cmd_package_utils.py
index 71534003..a26e052c 100644
--- a/cmds/cmd_package/cmd_package_utils.py
+++ b/cmds/cmd_package/cmd_package_utils.py
@@ -32,6 +32,7 @@
 import shutil
 import requests
 import logging
+from vars import Import
 
 def execute_command(cmd_string, cwd=None, shell=True):
     """Execute the system command at the specified address."""
@@ -219,7 +220,7 @@ def find_string_macro_in_config(filename, macro_name):
 
 # return IAR execution path string or None for failure
 def find_IAR_EXEC_PATH():
-    env_root = os.getenv("ENV_ROOT")
+    env_root = Import('env_root')
     # get the .config file from env
     env_kconfig_path = os.path.join(env_root, 'tools\scripts\cmds')
     env_config_file = os.path.join(env_kconfig_path, '.config')
@@ -229,7 +230,7 @@ def find_IAR_EXEC_PATH():
 
 # return Keil-MDK execution path string or None for failure
 def find_MDK_EXEC_PATH():
-    env_root = os.getenv("ENV_ROOT")
+    env_root = Import('env_root')
     # get the .config file from env
     env_kconfig_path = os.path.join(env_root, 'tools\scripts\cmds')
     env_config_file = os.path.join(env_kconfig_path, '.config')