The invention provides a production method of a PVC decorative board, and solves the technical problems that the conventional decorative board has too simple components, has no antistatic and anti-aging properties, has a single function and the like. The production method of the PVC decorative board comprises the following steps: a, preparing materials: firstly putting a PVC powder, paraffin, stearic acid and active heavy calcium carbonate into an ordinary stirrer, stirring for 20min at the speed of 680r/min, then adding remaining raw materials, then stirring for 11min at the speed of 450r/min, controlling the temperature to 120 DEG C, and preparing a mixed material; b, performing vacuum heat treatment: performing vacuum heat treatment in a vacuum medium with the vacuum degree of 0.9Pa, and then naturally cooling, wherein the heat treatment temperature is 220 DEG C and the heat treatment time is 40min; c, moulding: putting the mixed material in the step b into a mould, putting the mould into a 55 DEG C thermostat, standing at constant temperature for 2h, demoulding to obtain a board with the thickness of 7m, and airing the board by using airing equipment, wherein the airing temperature is 33 DEG C and the airing time is 40h. The PVC decorative board has the advantage of strong functionality.