Low density polyethylene(LDPE) and linear low density polyethylene(LLDPE) were used as basic materials, and ethylene vinyl acetate copolymer(EVA) were added into them to blow fresh-keeping films. The mechanical and friction performance of the films were studied. The results showed that with increase of EVA content, the tensile strength, elongation, puncture resistance strength and tear strength decrease, but the coefficient of friction increases.