In the combustion chamber environment, sensors are prone to drift and failure, leading to measurement deviation. Therefore, research is being conducted on the design of a multi-sensor based liquid rocket engine parameter measurement system. In terms of hardware, a reliable hardware acquisition platform has been constructed by optimizing sensor selection and configuration, designing high-precision signal conditioning circuits, selecting high-speed data acquisition equipment and embedded processors; At the software level, an algorithm system has been developed that includes three modules: data acquisition and processing, dynamic correction, and parameter calculation. Adaptive filtering and real-time compensation techniques are used to improve measurement accuracy. Through the collaborative operation of hardware units and software modules, precise measurement and application of liquid rocket engine parameters have been achieved. The experimental results show that the sensor signal processed by the designed system has a high signal-to-noise ratio and overall smoothness. The minimum packet loss rate of the sensor data reaches 0.5%, and the minimum measurement error of the parameter (gas temperature) reaches 0.2%, which fully confirms the excellent parameter measurement effect of the designed system.