Gas tightness testing device for bathroom tap cavities

A gas tightness testing device for bathroom tap cavities comprises a frame provided with a testing platform, wherein a clamp for clamping a tested tap is arranged on the testing platform, a pluralityof testing gas inlets corresponding to a tested cavity of the tested tap are also arranged on the testing platform, a seal ring is arranged at the periphery of each testing gas inlet, a gas source communicated with gas outlet pipes is further included, the gas outlet pipes are divided into testing gas circuits and actuating gas circuits after passing through a reducing valve and a filter, the testing gas circuits are communicated with the testing gas inlets respectively, a solenoid valve and a pressure transmitter are mounted on each testing gas circuit, the pressure transmitters are in signalconnection with a controller provided with a judgment unit which is used for judging the changes of pressure semaphore measured by the pressure transmitters, and the actuating gas circuits are connected with clamping cylinder