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With the increasingly complicated liquid rocket engines, the traditional control mode is difficult to Meet the requirements for measurement and control; For the intelligent needs of the current liquid rocket engine, the efficient real -time control and monitoring of liquid rocket engine syetem based on FPGA（Field Programmable Gate Array）is designed.The control and monitoring system has 24 channels drive control capabilities, with 32 channels signal synchronous collection, real -time processing and storage capabilities, which can communication with Synchronous RS422 based on the HDLC(High-Level Data Link Control) protocol.The experimental results show that the control monitoring system can drive the engine valve and real -time collection of the engine status parameters to achieve data communication based on the HDLC protocol;Hardware -based control and monitoring systems improve the integration of engine electrical systems, improve system reliability, and lay the hardware foundation for future engine health management and fault diagnosis algorithms.