diff --git a/setup.cfg b/setup.cfg
index 86fa693..12cb14b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name=xls2ddl
-version = 1.0.2
+version = 1.0.3
 description = a xlsx file to database ddl converter 
 author = "yu moqing"
 author_email = "yumoqing@gmail.com"
diff --git a/xls2ddl/singletree.py b/xls2ddl/singletree.py
index 8f2637b..569c5d0 100644
--- a/xls2ddl/singletree.py
+++ b/xls2ddl/singletree.py
@@ -109,31 +109,31 @@ return []
 def gen_tree_ui(d, pat):
 	e = MyTemplateEngine([])
 	s = e.renders(ui_tmpl, d)
-	with open(os.path.join(pat, f'index.ui'), 'w') as f:
+	with codecs.open(os.path.join(pat, f'index.ui'), 'w', "utf-8") as f:
 		f.write(filter_backslash(s))
 	
 def gen_delete_nodedata(d, pat):
 	e = MyTemplateEngine([])
 	s = e.renders(data_delete_tmpl, d)
-	with open(os.path.join(pat, f'delete_{d.tblname}.dspy'), 'w') as f:
+	with codecs.open(os.path.join(pat, f'delete_{d.tblname}.dspy'), 'w', "utf-8") as f:
 		f.write(filter_backslash(s))
 
 def gen_update_nodedata(d, pat):
 	e = MyTemplateEngine([])
 	s = e.renders(data_update_tmpl, d)
-	with open(os.path.join(pat, f'update_{d.tblname}.dspy'), 'w') as f:
+	with codecs.open(os.path.join(pat, f'update_{d.tblname}.dspy'), 'w', "utf-8") as f:
 		f.write(filter_backslash(s))
 
 def gen_new_nodedata(d, pat):
 	e = MyTemplateEngine([])
 	s = e.renders(data_new_tmpl, d)
-	with open(os.path.join(pat, f'new_{d.tblname}.dspy'), 'w') as f:
+	with codecs.open(os.path.join(pat, f'new_{d.tblname}.dspy'), 'w', "utf-8") as f:
 		f.write(filter_backslash(s))
 
 def gen_get_nodedata(d, pat):
 	e = MyTemplateEngine([])
 	s = e.renders(get_nodes_tmpl, d)
-	with open(os.path.join(pat, f'get_{d.tblname}.dspy'), 'w') as f:
+	with codecs.open(os.path.join(pat, f'get_{d.tblname}.dspy'), 'w', "utf-8") as f:
 		f.write(filter_backslash(s))
 
 def build_tree_ui(tree_data, dbdesc):