Abstract: With the power transfer requiring ensuring quality,high efficiency,strong reliability,time synchronization equipments are particularly important for the safe operation and fault detection of power system. The distribution monitoring system based on single-chip controller STC12C5A60S2 and NEO-6M GPS timing module is introduced. First, the overall framework of the system is designed to achieve the paticular functions; second, hardware and software design is made mainly on the acquisition system of distribution parameters ，GPS timing and positioning module, PROTEUS simulation is done; then, GPS time and position displaying through LCD12864 is realized; finally, PC software is designed to achieve the the entire system function.