Backflow prevention testing device for water supply connector

According to the backflow prevention testing device for the water supply connector, the water supply connector comprises a water supply end and a water outlet end, the water supply end and the water outlet end are both connected with Luer connectors, and a one-way film is arranged in the water supply connector; the anti-backflow testing device comprises a sealing tester, the sealing tester is connected with a first pipeline, a filtering membrane is arranged between the sealing tester and the first pipeline, and the first pipeline is connected with the water supply end of the water supply connector to be tested; the device further comprises a second pipeline, the second pipeline is connected with the water outlet end of the water supply connector, and one end of the second pipeline is connected with an injector. The backflow prevention device is simple in structure and convenient to operate, reverse pressure extraction is conducted on the water supply connector through the sealing tester, and the content of te