Abstract: Cold welding tests mainly concern the following factors: vacuum value, temperature, normal pressure of contact surface, contamination of surface finish and relative activity of contact surfaces. Space cold welding tests use environmental test satellites to study related effects, along with tests for protection against cold welding It is shown that the coating layers of Al2O3、ZrO2、Cr2O3、MoS2 may reduce friction between metal surfaces and prevent cold welding. In our country, the cold welding test is currently restricted to the ground simulation test. This paper discusses various cold welding and cold welding resistant facilities, including their objectives, technology guidelines and related equipments. Some suggestions are made on research orientation of key topics.