diff --git a/nc_http/__init__.py b/nc_http/__init__.py
index b3c06d4..ee0f28a 100644
--- a/nc_http/__init__.py
+++ b/nc_http/__init__.py
@@ -1 +1 @@
-__version__ = "0.0.1"
\ No newline at end of file
+__version__ = "0.0.1.1"
\ No newline at end of file
diff --git a/nc_http/core/__init__.py b/nc_http/core/__init__.py
index e7bc240..f57e6fc 100644
--- a/nc_http/core/__init__.py
+++ b/nc_http/core/__init__.py
@@ -1,3 +1,20 @@
 """
 core: 依赖于第三方类库的工具函数、类
 """
+from nc_http.core.excel.excel_reader import ExcelReader
+from nc_http.core.excel.excel_writer import ExcelWriter
+from nc_http.core.response.response import Response
+from nc_http.core.response.response_meta import ResponseMeta
+from nc_http.core.response.meta import Meta
+from nc_http.core.verification.image import SimpleImageCaptcha
+from nc_http.core.verification.storage import BaseCaptchaStorage
+
+__all__ = [
+    'ExcelReader',
+    'ExcelWriter',
+    'Response',
+    'ResponseMeta',
+    'Meta',
+    'SimpleImageCaptcha',
+    'BaseCaptchaStorage',
+]
diff --git a/nc_http/core/response/__init__.py b/nc_http/core/response/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/nc_http/core/response/meta.py b/nc_http/core/response/meta.py
new file mode 100644
index 0000000..cba41fe
--- /dev/null
+++ b/nc_http/core/response/meta.py
@@ -0,0 +1,34 @@
+from nc_http.core import ResponseMeta
+
+
+class Meta:
+    """
+    预设响应描述信息
+    """
+    OK = ResponseMeta(code=200, http_code=200, description='')
+    # 请求已经被实现，而且有一个新的资源已经依据请求的需要而创建。
+    CREATED = ResponseMeta(code=201, http_code=201, description='')
+    # 资源已经删除。
+    NO_CONTENT = ResponseMeta(code=204, http_code=204, description='')
+    # 由于包含语法错误，当前请求无法被服务器理解。
+    BAD_REQUEST = ResponseMeta(code=400, http_code=400, description='请求数据错误!')
+    # 当前请求需要用户验证。
+    UNAUTHORIZED = ResponseMeta(code=401, http_code=401, description='授权无效!')
+    # 服务器已经理解请求，但是拒绝执行它。
+    FORBIDDEN = ResponseMeta(code=403, http_code=403, description='无访问权限,请退出重新登录!')
+    # 无权限操作
+    OPERATE_FORBIDDEN = ResponseMeta(code=407, http_code=403, description='无操作权限')
+    # 请求失败，请求所希望得到的资源未被在服务器上发现。
+    NOT_FOUND = ResponseMeta(code=404, http_code=404, description='资源不存在!')
+    # 请求行中指定的请求方法不能被用于请求相应的资源。
+    METHOD_NOT_ALLOWED = ResponseMeta(code=405, http_code=405, description='方法不存在!')
+    # 请求的资源的内容特性无法满足请求头中的条件，因而无法生成响应实体。
+    NOT_ACCEPTABLE = ResponseMeta(code=406, http_code=406, description='客户端无效!')
+    # 服务器遇到了一个未曾预料的状况，导致了它无法完成对请求的处理。
+    INTERNAL_SERVER_ERROR = ResponseMeta(code=500, http_code=500, description='服务器内部错误!')
+    # 作为网关或者代理工作的服务器尝试执行请求时，从上游服务器接收到无效的响应。
+    BAD_GATEWAY = ResponseMeta(code=502, http_code=502, description='接口错误!')
+    # 由于临时的服务器维护或者过载，服务器当前无法处理请求。
+    SERVICE_UNAVAILABLE = ResponseMeta(code=503, http_code=503, description='服务暂时不可用!')
+    # 未能及时从上游服务器收到响应。
+    GATEWAY_TIMEOUT = ResponseMeta(code=504, http_code=504, description='接口超时!')
diff --git a/nc_http/core/response/response.py b/nc_http/core/response/response.py
new file mode 100644
index 0000000..e9a4368
--- /dev/null
+++ b/nc_http/core/response/response.py
@@ -0,0 +1,75 @@
+from flask import g, request
+from flask import json
+from flask import make_response
+
+
+class Response(object):
+    """
+    业务响应类
+    """
+    def __init__(self, data=None, meta=None, pagination=None, headers=None, code=200):
+        result = {}
+
+        pagination = pagination or getattr(g, 'pagination', None)
+        if hasattr(pagination, 'present'):
+            result['pagination'] = pagination.present()
+        elif pagination:
+            result['pagination'] = pagination
+
+        if hasattr(meta, 'present'):
+            result['meta'] = meta.present()
+        elif meta:
+            result['meta'] = meta
+        else:
+            # 默认 meta
+            result['meta'] = {
+                'code': code,
+                'message': '',
+            }
+
+        if hasattr(data, 'present'):
+            result['data'] = data.present()
+        else:
+            result['data'] = data
+
+        head = {'Content-Type': 'application/json'}
+        if headers:
+            head.update(headers)
+
+        if head.get('Content-Type') == 'application/json':
+            result = json.dumps(result)
+
+        head.update(cross_domain_headers())
+
+        response = make_response(result)
+        response.headers = head
+
+        self.response = response
+
+    def __call__(self, environ, start_response):
+        return self.response(environ, start_response)
+
+
+def cross_domain_headers(is_list=False):
+    """
+    跨域 headers
+    :param is_list:
+    :return:
+    """
+    origin = request.headers.get('Origin')
+    headers = {}
+    if origin:
+        headers['Access-Control-Allow-Origin'] = origin
+        headers['Access-Control-Allow-Credentials'] = 'true'
+        headers['Access-Control-Allow-Methods'] = 'GET, POST, PUT, DELETE, OPTIONS'
+        headers['Access-Control-Allow-Headers'] = ', '.join((
+            'Origin', 'No-Cache', 'X-Requested-With', 'If-Modified-Since', 'Pragma',
+            'Last-Modified', 'Cache-Control', 'Expires', 'Content-Type',
+        ))
+    else:
+        headers['Access-Control-Allow-Origin'] = '*'
+
+    if is_list:
+        return [(key, value) for key, value in headers.items()]
+    else:
+        return headers
diff --git a/nc_http/core/response/response_meta.py b/nc_http/core/response/response_meta.py
new file mode 100644
index 0000000..ec26693
--- /dev/null
+++ b/nc_http/core/response/response_meta.py
@@ -0,0 +1,46 @@
+from werkzeug.wrappers import Response
+from flask import json
+
+from nc_http.core.response.response import cross_domain_headers
+
+
+class ResponseMeta(Exception):
+    """
+    响应描述信息
+    """
+    def __init__(self, code=None, description=None, http_code=400, **kwargs):
+        Exception.__init__(self)
+        self.http_code = http_code
+        self.code = code
+        self.description = description
+        self.extra = kwargs
+
+    def update(self, **kwargs):
+        self.extra.update(kwargs)
+
+    def present(self):
+        data = {}
+        if self.code:
+            data['code'] = self.code
+        if self.description:
+            data['message'] = self.description
+
+        data.update(self.extra)
+
+        return data
+
+    def get_response(self):
+        meta = self.present()
+        if meta:
+            body = json.dumps({'meta': self.present()})
+        else:
+            body = None
+
+        headers = [('Content-Type', 'application/json')]
+        headers += cross_domain_headers(is_list=True)
+
+        return Response(body, self.http_code, headers)
+
+    def __call__(self, environ, start_response):
+        response = self.get_response()
+        return response(environ, start_response)
diff --git a/nc_http/core/verification/storage.py b/nc_http/core/verification/storage.py
index 7109b15..2f54f14 100644
--- a/nc_http/core/verification/storage.py
+++ b/nc_http/core/verification/storage.py
@@ -1,9 +1,9 @@
-from abc import abstractmethod, ABC
+from abc import abstractmethod
 
 from nc_http.core.verification.image import SimpleImageCaptcha
 
 
-class BaseCaptchaStorage(ABC):
+class BaseCaptchaStorage:
     """
     验证码信息池
     """
diff --git a/nc_http/utils/__init__.py b/nc_http/utils/__init__.py
index 7497b68..5a078fd 100644
--- a/nc_http/utils/__init__.py
+++ b/nc_http/utils/__init__.py
@@ -1,3 +1,8 @@
 """
 utils: 依赖于 core 的类库
 """
+from nc_http.utils.sheet.sheet import Sheet
+
+__all__ = [
+    'Sheet'
+]