Abstract: Traditional electronic form development tools typically have complex operations,unnatural interaction,and are difficulty to adapt to the users' need changes.This makes the development of pen-based form applications only amenable by professional developers.This paper proposes an end-user development tool for pen-based form application,called EUDTPFA.We present the system architecture,and the models of the ink data,the form interface,the business rule,the interaction,the scene and the mapping.We illustrate the developing process of the form application with an example.Experimental results demonstrate that the tool can effectively help the end-users develop the pen-based form applications.