https ://developers.facebook.com/docs/reference/api/page/#photos 说，

通过发布具有publish_stream 和manage_pages权限 […]的PAGE_ID/照片的HTTP POST请求，您可以将照片发布到Page的墙上"

"You can post photos to a Page's Wall by issuing an HTTP POST request to PAGE_ID/photos with the publish_stream and manage_pages permissions […]"

不允许像普通"用户这样的声音通过API将图像发布到页面的墙上.

Sounds like a "normal" user is not allowed to post images to a page’s wall via the API.