The invention relates to a multifunctional after-finishing method for high count yarn tribute silk.The method comprises the following steps: padding a resin water repellent with the mangle expression of 85-90 percent, preliminary drying, tenter drying (the moisture content is controlled to be 10-15 percent during cropping), planishing, electric polishing, roasting at the temperature of 170-180 DEG C for 60-90 seconds, soaping, washing, neutralizing, padding in crease-resistant finishing solution, cold rolling and externally packing a plastic film, stacking at room temperature, loosening, standing for 24 hours, washing, drying, cutting, sewing, pressing at high temperature, open washing, dehydrating, and heat setting, thus obtaining the finished product. With the adoption of the working solution prepared from a mixed resin initial shrinkage body (HMM/DMEU being 1:4), a catalyst, organosilicon waterproofing agent emulsion (or water and oil repellent emulsion), the finished fabric is smooth in surface, bright, soft, smooth and real in handfeel and good in waterproof and crease-resistant properties.