Abstract: The compressor three-way valve is a key component in the refrigeration system, and its function is to accurately control the flow path and direction of refrigerant and ensure the efficient refrigeration cycle. In this paper, SD-5 compressor is taken as the research object, a T-shaped column cock three-way valve is designed, the structural design of the three-way valve is completed, and the static analysis of the compressor three-way valve model is carried out, revealing the mechanical properties of the three-way valve, providing guidance for the optimal design of the three-way valve. The research shows that the position of the maximum deformation is the glossy surface where the valve body has no connection port, and the maximum deformation value is 0.005 53 mm; The maximum stress is distributed at the port of valve body and connecting pipe, and the minimum stress is also distributed at the port of valve body and connecting pipe. The maximum stress is 70.278 MPa and the minimum stress is 8.748 7 MPa.