I want to define a custom table cell view and reuse it in many tableView, so I create a xib file containing my custom cell view, but the problem is I don’t know how to load the xib file in storyboard
the table cell view:

and I want the view show in the black area in storyboard

You can just build the view directly in the storyboard prototype cells : http://www.appcoda.com/ios-programming-customize-uitableview-storyboard/
And to use the same view in different tableviews present in different controllers, you can just copy and paste (cmd-C cmd-V) the view within the prototype cell, so you dont need the XIB’s at all.
But using the assistant editor, you an drag or copy-paste the views from the XIB to the storyboard too (but thats not recommended)
Hope this helps