Simulate whether the battery pack or system will leak, rupture the casing, catch fire or explode after the battery pack or system is kept under a certain temperature, a certain pH and a certain concentration of salt spray for a period of time. An important basis for safe travel. At the same time, this machine can also test the corrosion resistance of various materials after the surface of various materials has been subjected to corrosion treatment such as electroplating, anodizing, spraying, and anti-rust oil. The machine adopts a walk-in structure, and the test box has high explosion-proof performance and rapid fire extinguishing device, which can ensure the safety of the test.