Abstract: The proton therapy monitoring system is a crucial component of the proton therapy system. Addressing the requirements for high precision and high reliability of monitoring systems imposed by proton therapy equipment, this paper proposes a design scheme for a proton therapy monitoring system based on a domestic SCADA(supervisory control and data acquisition)platform. The system is divided into four layers: the equipment layer, data acquisition layer, data processing layer, and data display layer. The functions of each layer are constructed and integrated in the form of module sets or interfaces. Through real-time acquisition, processing, and analysis of the operating parameters of proton therapy equipment, the system.