SharePoint怎样给指定的某一个文档库添加Ribbon菜单，不是全部文档库
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SharePoint Designer 2013可以在UI的界面下添加，或者自己写代码吧.
UI:
SharePoint Designer 2013 can be used to create a ribbon button for SharePoint list or library. Once clicked, the button will perform a custom action function.
Step 1: In SharePoint Designer 2013, open the site containing the library or list where the custom action button on the ribbon will be deployed.
Step 2: Open the library or list from the left navigation panel.
Step 3: Create the custom action by clicking on “Custom Action” button from ribbon and select “View Ribbon.”
Step 4: Give the custom action a name and description.
Step 5: Select Navigate to URL and enter the URL for the action. This will redirect the user to the specified URL when the ribbon button is clicked. Then select the URL of the image to display on the ribbon button and click OK button.
Step 6: Open the site & then your list in your browser for which custom action button was created.
Step 7: Click on the “Files” tab in the ribbon. Locate the new custom action button.
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楼上正解
或者比较麻烦的方法，自己定义一个文档库，单独一个Type，然后给这个Type加ribbon
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http://tomaszrabinski.pl/wordpress/2012/11/07/add-ribbon-button-to-one-list-or-library-in-sharepoint-2010/
这里有两种方法：
1. 自定义一个library template, 有一个新的template id，比如10000。 那么ribbon只出现在这种类型的library上。
2. 用程序添加。
楼主试一下吧
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http://www.cnblogs.com/jianyus/p/3877919.html
或者加上菜单，除了你需要的，其他都hide住