Fault diagnosis of hydraulic pumps is crucial for their normal operation and health management,and the hydraulic pump diagnostic method based on signal processing has become mainstream.In recent years,scholars have been very active in the research of hydraulic pump fault diagnosis,but there is lack of systematic summary and analysis of hydraulic pump fault analysis and diagnosis methods.Through statistical analysis of literature related to hydraulic pumps,the causes of hydraulic pump faults,basic methods of fault diagnosis,and research progress were systematically summarized.The development prospects of hydraulic pump fault analysis and diagnosis were pointed out,providing reference value for researchers and related maintenance personnel and indicating research directions.