The invention provides an improved production method for a pillowcase. The improved production method is used for solving the technical problems that the existing manufacturing methods are too simple and a cotton material of the pillowcase does not have antibacterial, anti-electrostatic and flame-retardant properties and are single in function and the like. The improved production method for the pillowcase comprises the following steps: (a) selecting the raw materials in parts by weight: 40-60 parts of aqueous PU resin, 5-6 parts of emulsion, 0.5-2 parts of antifoamer, 3-6 parts of antibacterial agent, 0.6-1 part of antioxidant, 0.5-1.6 parts of thickener, 2-4 parts of magnesia, 2-4 parts of zinc oxide and 12-26 parts of water; (b) mixing the raw materials together through a stirrer, and completing slurry preparing; (c) putting the prepared slurry into a foaming machine; (d) adding a shell fabric, ironing the surface of the shell fabric, and carrying out deep loading; (e) baking the loaded shell fabric into a baking oven; (f) tailoring the baked shell fabric through a tailoring machine so as to obtain semifinished products of required sizes; (g) sewing the semifinished products through a sewing device. The improved production method for the pillowcase has the advantage of high functionality.