diff --git a/tests/test.py b/tests/test.py
index 3b71f16..dd246b6 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -867,6 +867,45 @@ def test_apijson_get():
     >>> print(d)
     {'code': 200, 'msg': 'success', '[]': [{'moment': {'user_id': 2, 'date': '2018-11-01 00:00:00', 'content': 'test moment', 'picture_list': '[]', 'id': 1}}]}
 
+    >>> #query array, {} <= with datetime
+    >>> data ='''{
+    ... "[]":{
+    ...         "moment": {
+    ...             "date{}": "<='2018-11-02 00:00'"
+    ...         }
+    ...     }
+    ... }'''
+    >>> r = handler.post('/apijson/get', data=data, pre_call=pre_call_as("admin"), middlewares=[])
+    >>> d = json_loads(r.data)
+    >>> print(d)
+    {'code': 200, 'msg': 'success', '[]': [{'moment': {'user_id': 2, 'date': '2018-11-01 00:00:00', 'content': 'test moment', 'picture_list': '[]', 'id': 1}}, {'moment': {'user_id': 3, 'date': '2018-11-02 00:00:00', 'content': 'test moment from b', 'picture_list': '[]', 'id': 2}}]}
+
+    >>> #query array, {} >= with datetime
+    >>> data ='''{
+    ... "[]":{
+    ...         "moment": {
+    ...             "date{}": ">='2018-11-02 00:00'"
+    ...         }
+    ...     }
+    ... }'''
+    >>> r = handler.post('/apijson/get', data=data, pre_call=pre_call_as("admin"), middlewares=[])
+    >>> d = json_loads(r.data)
+    >>> print(d)
+    {'code': 200, 'msg': 'success', '[]': [{'moment': {'user_id': 3, 'date': '2018-11-02 00:00:00', 'content': 'test moment from b', 'picture_list': '[]', 'id': 2}}, {'moment': {'user_id': 4, 'date': '2018-11-06 00:00:00', 'content': 'test moment from c', 'picture_list': '[]', 'id': 3}}]}
+
+    >>> #query array, {} >= with a invalid datetime
+    >>> data ='''{
+    ... "[]":{
+    ...         "moment": {
+    ...             "date{}": ">='2018-11-42 00:00'"
+    ...         }
+    ...     }
+    ... }'''
+    >>> r = handler.post('/apijson/get', data=data, pre_call=pre_call_as("admin"), middlewares=[])
+    >>> d = json_loads(r.data)
+    >>> print(d)
+    {'code': 400, 'msg': "''2018-11-42 00:00'' cannot convert to datetime"}
+
     >>> #query array, !{} <
     >>> data ='''{
     ... "[]":{
@@ -951,6 +990,21 @@ def test_apijson_get():
     >>> print(d)
     {'code': 200, 'msg': 'success', '[]': [{'user': {'username': 'userb', 'nickname': 'User B', 'id': 3}}, {'user': {'username': 'userc', 'nickname': 'User C', 'id': 4}}]}
 
+    >>> #query array, &{} condition list
+    >>> data ='''{
+    ... "[]":{
+    ...         "user": {
+    ...             "@role": "ADMIN",
+    ...             "date_join&{}": ">='2018-1-1 00:00',<='2018-2-2 00:00'",
+    ...             "@column": "username,nickname,id,date_join"
+    ...         }
+    ...     }
+    ... }'''
+    >>> r = handler.post('/apijson/get', data=data, pre_call=pre_call_as("admin"), middlewares=[])
+    >>> d = json_loads(r.data)
+    >>> print(d)
+    {'code': 200, 'msg': 'success', '[]': [{'user': {'username': 'admin', 'nickname': 'Administrator', 'date_join': '2018-01-01 00:00:00', 'id': 1}}, {'user': {'username': 'usera', 'nickname': 'User A', 'date_join': '2018-02-02 00:00:00', 'id': 2}}]}
+
     >>> #query array, {} multiple condition to a same field
     >>> data ='''{
     ... "[]":{
diff --git a/uliweb_apijson/apijson/views.py b/uliweb_apijson/apijson/views.py
index 3ec61e2..5dc8a7e 100644
--- a/uliweb_apijson/apijson/views.py
+++ b/uliweb_apijson/apijson/views.py
@@ -1,12 +1,14 @@
 #coding=utf-8
-from uliweb import expose, functions, models, UliwebError
+from uliweb import expose, functions, models, UliwebError, request
 from uliweb.orm import ModelNotFound
 from uliweb.utils._compat import string_types
+from uliweb.utils.date import to_datetime
 from sqlalchemy.sql import and_, or_, not_
 from json import loads
 from collections import OrderedDict
 import logging
 import traceback
+from datetime import datetime
 from . import ApiJsonModelQuery
 
 log = logging.getLogger('apijson')
@@ -274,7 +276,7 @@ def _get_filter_condition(self,model,model_param,item,expr=False):
                     return fcond
                 elif len(cond_list)>1:
                     fcond = self._get_filter_condition_from_str(col,cond_list[0])
-                    for c in cond_list:
+                    for c in cond_list[1:]:
                         fc = self._get_filter_condition_from_str(col,c)
                         if operator=="&":
                             fcond = and_(fcond,fc)
@@ -293,20 +295,40 @@ def _get_filter_condition(self,model,model_param,item,expr=False):
     def _get_filter_condition_from_str(self,col,cond_str):
         cond_str = cond_str.strip()
         c1,c2 = cond_str[0],cond_str[1]
+        v = None
+        def _conver():
+            nonlocal v
+            if v and col.type.python_type==datetime:
+                _v = v
+                v = to_datetime(v,tzinfo=getattr(request,"tzinfo",None))
+                if v==None:
+                    raise UliwebError("'%s' cannot convert to datetime"%(_v))
         if c1=='>':
             if c2=="=":
-                return col >= cond_str[2:]
+                v = cond_str[2:]
+                _conver()
+                return col >= v
             else:
+                v = cond_str[1:]
+                _conver()
                 return col > cond_str[1:]
         elif c1=='<':
             if c2=="=":
-                return col <= cond_str[2:]
+                v = cond_str[2:]
+                _conver()
+                return col <= v
             else:
-                return col < cond_str[1:]
+                v = cond_str[1:]
+                _conver()
+                return col < v
         elif c1=="=":
-            return col == cond_str[1:]
+            v = cond_str[1:]
+            _conver()
+            return col == v
         elif c1=="!" and c2=="=":
-            return col != cond_str[2:]
+            v = cond_str[2:]
+            _conver()
+            return col != v
         raise UliwebError("not support '%s'"%(cond_str))
 
     def head(self):