A minimum development system based SOPC is designed as well as the design thought of the system and its realization way are explained. With a PFGA as the core, this system has compact structure and embodies the characteristics of SOPC system such as high integration and strong flexibility. The cheaper chip with excellent interchangeability is selected and used in the design plan to reduce the cost. The functional test and application verification are carried out for the system board and the results are in accordance with the design requirements.