In order to improve the effect of control of BLDCM,this paper designed a brushless DC(BLDG)motor control system based on Digital Signal Processor(DSP).It is made up of four aspects,the main structure of system,the structure of system hardware,the strategy of motor controlling and the structure of software.Study results show that the system has a simple and compact structure,high control precision,good dynamic,static characteristics,low cost,high reliability and good value of application.