Hi,macropod:
I really appreciate your kind assistance !
I actually have read the material in the link .
But I really not good at VBA,so I spent a lot of time to research the file you offered.

The reason I ignored it is that "formfield" has automatic event,but " table cell ' doesn't.
According to your suggestion,I should put some formfield in the table,right?
My problem is that I have no ideal about which formfield I should put in.
Again,I really appreciate your kind assistance ! ^^