High efficiency air filter leakage detection method using Aerosol generator send out 0.3 micron diameter smoke dust particles, smoke particles arriving HEPA Filter air inlet surface by high pressure jet fan, if high efficiency air filter were observed by light smoke wind side have fog shows that the product has air leakage unqualified;Through the strong light observation, if the high efficiency air filter no smoke across, indicating that the product has no leakage point;The leak detection method is air filter rapid leak detection technology is generally used to famous foreign capital enterprise, our company guarantees that all high efficiency air filter through air leakage detection before delivery.