Abstract: The silk fabric was treated with propanetriol-diglycidyl-ether and chitosan in an attempt to improve its serviceability,anti-bacterial and wrinkle resistant properties.The grafting of propanetriol-diglycidyl-ether onto the silk fabric was accomplished by microwave radiation,followed by finishing the grafted fabric with the chitosan-acetic acid solution through double-dip-double-nip.The finishing process was optimized by means of orthogonal analytic method.The mechanical properties and the whiteness of the finished silk fabric were tested.The findings indicated that the treated silk fabric has improved its wrinkle resistance significantly with the angle of fast-elastic recovery enhanced about 50°,the angle of delayed-elastic recovery enhanced about 30°,and the breaking strength and whiteness dropped slightly.