Analyze the relationship between the life and material of the electric ball valve Due to the particularity of the electric ball valve's bearing, the material is also an important factor affecting the function of the electric ball valve, which largely affects the service life of the electric ball valve. The heat treatment, solution treatment and elongation of different materials are the focus of the discussion. In the research on the deformation martensite content of SUS04 and SUS316S austenitic stainless steel pipes, before and after solution treatment and fatigue test, it is found that the higher the nickel content, the less the martensite content; The solution treatment significantly reduced the content of martensite, and the content of trough deformation martensite phase significantly increased after fatigue loading. During the discussion on Inconel625, a commonly used material for electric ball valves, scholars discussed the reasonable application temperature of this material, and pointed out that when electric ball valves are used under ultra-high temperature conditions, appropriate measures should be taken to reduce their operating temperature, To ensure good lasting mechanical function and fatigue function. During the discussion on the influence of elongation of different materials on the forming rate of electric ball valves, some scholars pointed out the conditions for easy forming of pipes, which provided a scientific basis for the planning and material selection of electric ball valves. For the discussion of electric ball valve function in recent years, whether it is stiffness, stability, fatigue, vibration, etc., the finite element method has become an important method for the discussion of various aspects of pipe function, and its accuracy has been verified through experiments, which provides an important reference basis for the discussion, and has a great help for improving the function of electric ball valve and improving the service life.