Abstract: With the improvement of China's economy and the continuous increase of water conservancy projects, the pump station is an important part of water conservancy projects, and its operation directly aff ects whether the water conservancy projects can play a role. Therefore, in order to maintain the normal operation of water conservancy pump station, attention should be paid to pump fault detection and maintenance to ensure the stability and safety of pump operation. Based on this, this paper analyzes the common pump faults, and puts forward appropriate maintenance measures to improve the management and maintenance level of hydraulic engineering.