Silver-loaded antibacterial agent powder was added to low density polyethylene resin. Antibacterial film was prepared through blending and blow molding. Research showed that with increase of the antibacterial agents, the tensile strength and elongation of films first increase and decrease afterward and transparency decreases gradually; the coefficient of friction increases gradually, and permeability coefficient changes trend for first decreasing then increasing. Observation of scanning electron microscopy showed that antimicrobial agent dispersed evenly. With staphylococcus aureus as index of the antibacterial properties, test results showed that the silver-loaded antibacterial film has good antibacterial activity.