Abstract: Welding performance of high strength austenite stainless steel material of rail vehicles and performance characteristics of resistance spot welding equipment are introduced. The specification setting method of test sheet, welding fabrication method of single\|spot welding test and multi\|spot welding test, sampling method of test sample are analyzed. Results show that only under the condition that the spot welding equipment is qualified for appearance test, metallographic test and shear tensile test, can it be approved for rail vehicle product welding and manufacture.