Web form testing is a very important part of the testing of web system, which has the features of high repeatability and mechanical. In view of the low efficiency of traditional manual testing and the low reuse rate of “Capture/Playback” script of commercial testing tools, an automated testing tool named AFP (Automated Form Testing) based on the data-driven testing framework is designed in this paper. Compared to other testing tools, AFT has such characteristics as being easy to use and efficient.