The invention discloses a pore sealing treatment method of a thermal spraying amorphous alloy coating, and belongs to the technical field of thermal spraying. According to the method, the chromium-depletion corrosion-intolerant regions around the pores of a coating are dissolved through electrochemical treatment so as to fundamentally eliminate the weak links in the corrosion process of the coating, and then the corrosion resistance of the coating is substantially improved through subsequent epoxy resin sealing treatment, wherein the electrochemical treatment is performed in an electrochemicalworkstation containing an ordinary three-electrode electrolytic cell, the electrolyte solution is a sodium chloride solution with a mass fraction of 0.3-0.6%, the applied potential is a relatively saturated calomel electrode 1.2V, and the treatment time is 30-50 min. According to the present invention, with the method, the corrosion-intolerant regions in the coating can be eliminated so as to fundamentally improve the corrosion resistance of the coating; and the method is suitable for the subsequent treatment of the pore defect after the thermal spraying of amorphous alloy coatings on medium-small-size parts so as to improve the corrosion resistance of the whole sprayed member.