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In order to realize the monitoring of the heating end tube wall temperature and the combustion chamber pressure of the Stirling Engine, the monitoring system is designed with PIC18F6722 Embedded Microcontroller as the core of the control logic algorithm. The overall design, control strategy, hardwares and softwares design methods of the monitoring system are introduced. The PC is used as the host computer, and the man-machine dialogue window is designed with Kingview software. In the actual use of the Stirling Engine generator set, the monitoring system uses PID control to complete the temperature control of the heating end of the Stirling Engine, and the control precision is ± 5 ℃. Through the combination of crossing logic control and binary system, the pressure control of the hot gas engine combustion chamber is successfully realized, and the pressure control is stable within 2.8 ± 0.025 MPa. At the same time, the service time of the exhaust valve is increased by 6 times. The monitoring system also provides relevant data for performance simulation, optimization design and judgment of the Stirling Engine