Abstract: With the development of security and stability control system in the direction of wide-area and complexity, the number of security and stability control communication messages is large, the communication chain is long, and it is easy to be tampered with. When the communication messages are abnormal or damaged, leading to miss operations or miss trips of the security and stability control system, it is difficult to accurately trace the cause of the accident. To address this problem, we propose a blockchain-based communication messages recording and auditing system of security and stability control. A semi-centralized system model was designed based on the architecture and management requirements of security and stability control system, and a crossed multi-chain structure was designed for the architecture and business characteristics of security and stability control system. The experimental results show that this scheme not only can improve the authenticity, integrity and security of communication messages, but also has good performance.