Abstract: In order to meet the needs of a research project, the computer transformation of FMP system runs in the original CHALLENGE workstation which greatly improves the computing speed and portability of the program. The calculation results of two main program TPFAP-E and CFMP show that the computer transformation is very successful. On this basis, four-cycle core design calculations were validated according to “Design Calculation Report of Qinshan Nuclear Power Plant”, the main calculation results are consistent with the original report, and lay the foundation for the program system to carry out indepth fuel management studies.