Aimed at the problems of complex operations and low productivity of traditional control system of annealing machine, a control system based on Programmable Logic Controller (PLC), Man-Machine Interface (MMI) and servo controlled technology was present. Application of the servo control technology in the system of annealing machine was analyzed, and software and hardware of the control system were designed. The program of control system was mainly consisted of home return program, manual control program, automatic control program and fault alarm program. Moreover practical operation of the system was tested, and the results have shown that the system has advantages of simplicity of operator, running stable, high automated level and high productivity.