Abstract: High pressure steam jet steam compressor technology has a wide range of application prospects in the field of clean heating due to its good thermal load regulation performance and flexible allocation of thermal and electrical loads. This paper summarizes the operating characteristics of the high pressure steam jet steam compressor through the research and analysis of the actual performance test report of the 350 MW supercritical unit under different heating conditions of the high pressure steam jet steam compressor. According to this characteristic, the operation mode under different heating conditions is adjusted to improve the stability and economy of the unit operation.