The invention discloses a general battery open/close valve detecting and clamping device. The device comprises a pressing mechanism and a jacking mouth, wherein a double-step positioning mouth is arranged at the upper end of the jacking mouth; a rubber gasket is matchedly sleeved on the positioning mouth; an air inlet pipe is connected to the bottom of the jacking mouth; a pressing block of the pressing mechanism is located above the jacking mouth; and a to-be-detected valve holding space is left between the pressing block and the jacking mouth. The device disclosed by the invention has the advantages of simple structure, generality, capability of detecting various safety valves with different bore diameters and battery middle covers with the safety valves, convenience in operation, capability of improving the work efficiency and the detection accuracy, and water saving due to no need of supplying plenty of water to a pool.