Abstract: The coating agent was prepared by adding PU solution to the appropriate amount of chitosan solution while adjusting the viscosity and then applied to fabrics through transfer coating technique.The hydrostatic pressure and moisture permeability testers were used to examine the permeability,waterproof and antimicrobial properties of the coated fabrics.The results show that although chitosan has some effects on the hydrostatic pressure proof of the coated fabrics,it improves the moisture permeability remarkably and renders the fabrics antimicrobial property.Thus,a multi-functional coated fabric which has waterproofing, water vapor transmission and micro-organism resistance incorporated has been manufactured.