Abstract: In order to ensure the correctness, stability and reliability of the safety level DCS, it is necessary to perform the verification during the design phase, test phase and before the use of the safety level DCS, to prevent serious design problems. This paper presents a platform technology solution for simulating and verifying safety level DCS. The simulation verification platform technology solution can realize multi-dimensional and high-reality closed-loop verification of the safety level DCS, ensuring the correctness of the internal logic of the safety level DCS and the connection with the external system.