Aiming at the constant need of cutting various metal profiles in industry, the control mode of automatic profile cutting machine is studied, which is based on PLC (Programmable Logic Controller) controller. MCGS (Monitor and Control Generated System) is used for monitoring and management, and the modular design of control layer is completed. The core of the control layer is that we have a cutting material database, which makes up for the fact that the current cutting machine control system only aims at a single cutting model or material, and the cutting speed and torque of the cutting machine need to be adjusted or designed manually. Based on this market demand, the automatic control mode of profile cutting machine based on PLC is established. Practice shows that this mode is based on the analysis and comparison of common cutting materials in the market, and the material database is consequently established. Users can choose the required cutting mode through the intuitive MCGS graphical interface, which improves the cutting efficiency of users and reduces the development cost of enterprises.