要撤消对应用的授权，您可以使用HTTP DELETE请求：

To revoke authorisation for an app, you can use a HTTP DELETE request with:

 https://graph.facebook.com/PROFILE_ID/permissions

从 http://developers.facebook.com/docs/reference/api/user/#permissions ：

您可以通过向PROFILE_ID /权限发出HTTP DELETE请求来代表用户取消授权应用程序或撤销特定的扩展权限，该应用的用户access_token。

You can de-authorize an application or revoke a specific extended permissions on behalf of a user by issuing an HTTP DELETE request to PROFILE_ID/permissions with a user access_token for that app.