Abstract:In order to solve the existing problems in bullet painting and marking ,such as the weak continuous mass production capacity, low degree of automation, etc, a control system for bullet painting and marking machine based on SIEMENS PLC and touch screen machine was designed. Carry out analysis and research on application situation and problems of bullet painting and marking machine, introduce the control system realization function, taking PLC and touch screen configuration software as core, discuss the design of control system hardware. Realize the control system software design by overall design, PLC program design and man-machine interface design. The application results show that the system can realize the real-time monitoring on every situation of bullet painting and marking, and improve the work efficiency and technique automation degree.