K E Tpic is a macro package for Computer Algebra System (CAS) to convert plot data created by CAS to L A T E X picture data. We are able to draw fine pictures in L A T E X documents with aid of K E Tpic. At the present stage, K E Tpic packages for Maple, Mathematica, Scilab and Maxima are opened to the public and the number of people who gain benefits of K E Tpic is increasing. However the only way to produce L A T E X picture data is to enter commands on CAS. In order for as many people as possible to use K E Tpic more intuitively, we have started developing a graphical user interface (GUI) for K E Tpic. GUI is implemented by Maplets package of Maple.