The idea of designing a low cost and high performance industrial robot＇s control system is suitable for china＇s condition. A flexible robot＇s PLC control system was developed based on VB. Through the friendly human-machine interface,according to the actual application requirement,the robot＇s motion logic and parameters could be modified. This open control system of motion simple program can reduce the operator＇s requirement in professional quality and be beneficial for the industrial robot＇s popularization in production.