Abstract: An off line data analysis program of multiparameter experiments in nuclear physics is developed in Fortran Power Station environment. It is adapted to many kinds of data format with great flexibility,enables the user to perform complex manipulations in the event by event analysis by means of user's favorite subroutine which can be modified to his specifications and linked to the program.Moreover,many powerful functions encapsulated in the program,such as polygonal condition,linearization of 2 dimentional plot,fraction dividing,counter and spectrum increment etc., can be invoked by user, helping to make some common operations. Many tasks, including selection and compression of experimental data and physics analysis can be carried out with ease by using this application.