The aim of this work was to obtain the variation law of barrier properties of the PE-based packaging materials in salt spray environment. The oxygen transmission rate, water vapor transmission rate and surface morphology changes of packaging film were investigated for four kinds of PE based packaging materials before and after the salt spray test. Vacuum packaging technology increased both the oxygen transmission rate and the moisture vapor transmission rate of the three types of packaging films including polyethylene packaging film, PE high barrier packaging film and aluminized high barrier packaging film, while obviously decreased both the oxygen transmission rate and water vapor transmission rate of strengthened high barrier packaging film. In conclusion, PE-based high barrier packaging film is more adaptive to the vacuum composite packaging for the equipment in salt spray environment.