diff --git a/interface/ri_dep.py b/interface/ri_dep.py
index 8b42694..04b3215 100644
--- a/interface/ri_dep.py
+++ b/interface/ri_dep.py
@@ -1,7 +1,7 @@
 #!/usr/bin/python
 
 import ri_data
-
+import ri_func_dep
 from xml.dom import minidom
 import os.path
 
@@ -61,8 +61,8 @@ def construct_depended():
                 Depended(dep)
             Depended.dict[dep].depended_by.add(d.name)
 
-def get_extra_depending(pkg_list = []):
-    l = ri_data.Group.get_install_pkgs() + pkg_list
+def get_extra_depending(fun_pkg_list = []):
+    l = ri_data.Group.get_install_pkgs() + fun_pkg_list
 
     set1 = set(l)
     set2 = set(set1)
@@ -70,12 +70,22 @@ def get_extra_depending(pkg_list = []):
     for d in set1:
         set2.update(Depending.dict[d].depending)
 
-    global extra_pkgs
-    extra_pkgs = set2.difference(set1)
     res = {}
-    for d in extra_pkgs:
+    for d in set2.difference(set1):
         res[d] = Depended.dict[d].depended_by.intersection(set1)
 
     return res
 
-extra_pkgs = []
+class dependency_init():
+    ''' init dependency package and funcation'''
+    func_dep_list = []
+    func_dep_dict={}
+    dep_dict={}
+    def __init__(self):
+        dependency_init.func_dep_dict = ri_func_dep.check_function_depending()
+        dependency_init.func_dep_list.extend(dependency_init.func_dep_dict.values())
+        construct_depending()
+        resolve_recursive_depending()
+        construct_depended()
+        dependency_init.dep_dict = get_extra_depending(dependency_init.func_dep_list)
+
diff --git a/interface/ri_oper.py b/interface/ri_oper.py
index 777186f..6db4c28 100644
--- a/interface/ri_oper.py
+++ b/interface/ri_oper.py
@@ -191,13 +191,17 @@ class InstallPkg(Operation):
         self.return_value[3]=("Software package doesn't exist",u"软件包不存在")
 
     def get_stdin(self):
-        pkgname = ri_data.Group.get_install_pkgs() + ri_dep.extra_pkgs
+        pkgname = set(ri_data.Group.get_install_pkgs() + self.get_dependency_pkg())
         self.steps += len(pkgname)
-        return '\n'.join(pkgname) + '\n'
+        return '\n'.join(pkgname)+'\n'
 
     def get_arguments(self):
         return ["-s","/Rocky/packages"]
 
+    def get_dependency_pkg(self):
+        ri_dep.dependency_init()
+        return ri_dep.dependency_init.dep_dict.keys() + ri_dep.dependency_init.func_dep_list
+
 class ConfigureFstab(Mount):
     """class for configure /etc/fstab"""
     def __init__(self,scr):
diff --git a/interface/ri_tk_cmd.py b/interface/ri_tk_cmd.py
index 8f286c7..1c29253 100644
--- a/interface/ri_tk_cmd.py
+++ b/interface/ri_tk_cmd.py
@@ -204,27 +204,18 @@ def software_group_optional_quit():
         vn = "software_group_%s" %(i.name)
         i.install = display.var_dict[vn].get()
 
-def dependency_list_init():
+def dependency_fun_pkg_display():
     ''' init function for list in dependency step '''
-    func_dep_list = []
+    ri_dep.dependency_init()
     f_dep_text = ["function dependency list"]
-    func_dep_dict = ri_func_dep.check_function_depending()
-    for key in func_dep_dict.keys():
-       func_dep_list.append(func_dep_dict[key])
-    f = [ k.ljust(30) + ': ' + func_dep_dict[k] for k in func_dep_dict.keys() ]
+    f = [ k.ljust(30) + ': ' + ri_dep.dependency_init.func_dep_dict[k] for k in ri_dep.dependency_init.func_dep_dict.keys() ]
 
     dep_text = ["package dependency list"]
-    ri_dep.construct_depending()
-    ri_dep.resolve_recursive_depending()
-    ri_dep.construct_depended()
-
-    dep_dict = ri_dep.get_extra_depending(func_dep_list)
-    l = [ k.ljust(20) + ': ' + ' '.join(dep_dict[k]) for k in dep_dict.keys()]
+    l = [ k.ljust(20) + ': ' + ' '.join(ri_dep.dependency_init.dep_dict[k]) for k in ri_dep.dependency_init.dep_dict.keys()]
 
     l = f_dep_text + f + dep_text + l
     display.var_dict['dependency.list'].set(value=tuple(l))
-
-
+    
 def service_construct(w):
     ''' construct service widget based on actual data
 w - Widget instance '''
diff --git a/xml/interface.xml b/xml/interface.xml
index 8118783..812f32a 100644
--- a/xml/interface.xml
+++ b/xml/interface.xml
@@ -715,7 +715,7 @@ row 4 |                                                            |
       <widget_attribute listvariable='dependency.list'/>
       <grid_location row='0' column='0' padx='30' pady='30' sticky='NSWE'/>
       <variable name='dependency.list' type='StringVar'/>
-      <action init='dependency_list_init'/>
+      <action init='dependency_fun_pkg_display'/>
     </widget>
     <widget type='Scrollbar' name='dependency.scroll.v'>
       <widget_attribute orient='vertical'/>