In order to solve the problem of low speed, low precision and inconvenient realization of the traditional inverse trigonometric method, a kinematics inverse solution algorithm of motion platform based on FPGA controller. According to the principle of CORDIC algorithm, taking the rotating mode and vector quantization mode of the circular coordinate system as an example, the SOPC system architecture based on the Nios II soft core processor is constructed, and the reverse kinematics solution module is written using the C language. The theory of reverse kinematics is validated by the simulation software of Modelsim. The test results show that the reverse kinematics algorithm is correct by using FPGA.