ObjectiveTo research the method of preparing polyvinyl alcohol modified non woven fabric antibacterial composite membrane and properties of composite membrane. Methods Solution blended process was used in this experiment to mix PVA mother liquid with different antibacterial agent to make antibacterial PVA mother liquid. Then surface coating method was used to coat antibacterial mother liquid onto non woven fabric to make composite films after drying. Test and compare the properties of different composite films. Results SD-PVA/NWF composite film was better than PS-PVA/NWF and SB-PVA/NWF not only in water absorption property ,but also in tensile strength and optical performance; The type of the antibacterial agent makes composite films with different sealing temperature; Also, the addition of antibacterial agent decreased the thermostability of composite films; Compared with PS-PVA/NWF and SB-PVA/NWF composite film with the same additive amount, SD-PVA/NWF composite film has the best antibacterial property.