Through pu polyurethane dry coating, make all kinds of waterproof, breathable, permeable agent and adhesive fixed on fabric surface. Make fabric surface hole closed by coating agent, thus get waterproof function. Permeablity achieve through micropore structure or the action between hydrophilic group and hydrone, with the help of hydrogen bond and other molecule, it absorb hydrone on high wet side, later transmit to the low temperature for resolution to gain its function.