基于发动机故障模拟研究，结合实际试车数据统计分析，归纳出了泵压式液体火箭发动机的主要故障模式；从故障检测与诊断的角度，研究了发动机监测参数的选择与评价，并提出了监测参数选择与评价的三种标准；推荐了分别用于监控系统门限检验和故障论断的两组参数，为发动机的故障检测与诊断奠定了重要基础。 Based on the research of engine fault simulation and the statistical analysis of the actual test data, the main failure modes of the pump-pressure liquid propellant rocket engine are summarized. The selection and evaluation of the engine monitoring parameters are studied from the point of fault detection and diagnosis, and the monitoring parameters Selection and evaluation of three criteria; recommended for monitoring system threshold test and fault diagnosis of two sets of parameters for the engine fault detection and diagnosis laid an important foundation.