diff --git a/docs/dbtable.md b/docs/dbtable.md
index 7aefcda..d6fd6af 100644
--- a/docs/dbtable.md
+++ b/docs/dbtable.md
@@ -2,10 +2,14 @@
 
 数据库表用一个json格式文件或数据来定义，具体规范如下
 {
-    "name"
-    "title"
-    "primary"
-    "catelog"   # 可选项：entity relation dimession indication
+    "summary":[				# 仅一条记录
+		{
+			"name"			# 表名
+    		"title"			# 表标题
+    		"primary"		# 主键,等于"id"，所有表的主键均为id
+    		"catelog"   # 可选项：entity relation dimession indication
+		}
+	]
     "fields":[ # 字段
         {
             "name"
diff --git a/setup.cfg b/setup.cfg
index eebb977..2ae0623 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name=xls2ddl
-version = 1.0.4
+version = 1.1.0
 description = a xlsx file to database ddl converter 
 author = "yu moqing"
 author_email = "yumoqing@gmail.com"
@@ -15,6 +15,7 @@ install_requires =
 
 [options.entry_points]
 console_scripts =
+	json2ddl = xls2ddl.json2ddl:main
 	xls2ddl = xls2ddl.xls2ddl:main
 	xls2ui = xls2ddl.xls2ui:main
 	json2xlsx = xls2ddl.json2xlsx:main
diff --git a/xls2ddl/json2ddl.py b/xls2ddl/json2ddl.py
new file mode 100644
index 0000000..9978e30
--- /dev/null
+++ b/xls2ddl/json2ddl.py
@@ -0,0 +1,71 @@
+# -*- coding:utf-8 -*-
+import sys
+import io
+import sys
+from traceback import print_exc
+
+import codecs
+import json
+from sqlor.ddl_template_sqlserver import sqlserver_ddl_tmpl
+from sqlor.ddl_template_mysql import mysql_ddl_tmpl
+from sqlor.ddl_template_oracle import oracle_ddl_tmpl
+from sqlor.ddl_template_postgresql import postgresql_ddl_tmpl
+
+from appPublic.myTE import MyTemplateEngine
+from appPublic.folderUtils import listFile
+from xls2ddl.xlsxData import CRUDData, xlsxFactory
+
+tmpls = {
+	"sqlserver":sqlserver_ddl_tmpl,
+	"mysql":mysql_ddl_tmpl,
+	"oracle":oracle_ddl_tmpl,
+	"postgresql":postgresql_ddl_tmpl
+}
+
+def xls2ddl(xlsfile,dbtype):
+	data = None
+	if xlsfile.endswith('.json'):
+		with codecs.open(xlsfile,'r','utf-8') as f:
+			data = json.load(f)
+	if data is None:
+		print(xlsfile, 'not data return')
+		return
+	tmpl = tmpls.get(dbtype.lower())
+	if tmpl is None:
+		raise Exception('%s database not implemented' % dbtype)
+	e = MyTemplateEngine([])
+	s = e.renders(tmpl,data)
+	return s
+
+def model2ddl(folder,dbtype):
+	ddl_str = ''
+	for f in listFile(folder, suffixs=['json']):
+		try:
+			ddl_str += f'\n-- {f}\n'
+			s = xls2ddl(f,dbtype)
+			ddl_str = f"{ddl_str}\n{s}\n"
+
+		except Exception as e:
+			print('Exception:',e,'f=',f)
+			print_exc()
+	return ddl_str
+
+def main():
+	##解决windows 终端中输出中文出现 
+	# UnicodeEncodeError: 'gbk' codec can't encode character '\xa0' in position 20249
+	# 错误
+	# BEGIN
+	# sys.stdout = io.TextIOWrapper(sys.stdout.buffer,encoding='utf8')
+	sys.stdout.reconfigure(encoding='utf-8')
+	#
+	# END
+	if len(sys.argv) < 3:
+		print('Usage:%s dbtype folder' % sys.argv[0])
+		sys.exit(1)
+
+	s = model2ddl(sys.argv[2], sys.argv[1])
+	print(s)
+
+if __name__ == '__main__':
+	main()
+
diff --git a/xls2ddl/xls2crud.py b/xls2ddl/xls2crud.py
index 1d7522f..0f02ebe 100644
--- a/xls2ddl/xls2crud.py
+++ b/xls2ddl/xls2crud.py
@@ -23,7 +23,7 @@ usage:
 xls2crud.py dbname models_dir uidir
 """
 
-def build_dbdesc(models_dir: str) -> dict:
+def build_dbdesc(models_dir: list) -> dict:
 	print(f'{models_dir=}')
 	mdirs = []
 	if isinstance(models_dir, list):
@@ -38,6 +38,12 @@ def build_dbdesc(models_dir: str) -> dict:
 			d = x.get_data()
 			tbname = d.summary[0].name
 			db_desc.update({tbname:d})
+		for f in listFile(models_dir, suffixs=['.json']):
+			print(f'{f} handle ...')
+			with codecs.open(f, 'r', 'utf-8') as fh:
+				d = json.load(fh)
+			tbname = d['summary'][0]['name']
+			db_desc.update({tbname:d})
 	return db_desc
 
 def subtable2toolbar(desc):