To investigate the cavitation characteristics of a novel inclined axial flow pump with a single flow rate of 50.m3/s,based on an axial flow pump test platform, the energy characteristics and internal flow characteristics of the inclined axial flow pump under different blade angles were analyzed.The occurrence law of cavitation phenomenon for this kind of pump was summarized and reasonable design parameters and operation parameters were determined.The results show that the blade angle and head are closely related to the cavitation performance of the pump, and the cavitation performance of the pump is poor when running at high head or ultra-low head, which is easy to produce cavitation. The angle of pump blades can be reduced by variable propeller technology, so as to improve the cavitation performance and obtain better operation stability. Keywords: inclined axial flow pump; cavitation characteristics; blade angle; variable propeller technology 〖FL