Aim at solving the main problems of complexity and mechanism rigidity in the design and development of gorilla robot system, the modular combinational design method is introduced to the design of gorilla robot. Based on series joint unit with high rigidity and large output, a modular combinational gorilla robot is designed. The opening control system of the gorilla robot is composed of RS485 and intelligent drive and control modular. The developed gorilla robot system has characteristics of multiple motion ways, lighter weight - about 35kg, minitype - minimal standing height of 0.89m, integration and modular combination