Cleaning agent of grease stain on metallic surface and method of use thereof

The invention discloses metal surface oil sludge detergent and a use method thereof; the prescription of the detergent comprises: 0.5 percent to 1 percent of NaOH, 1 percent to 5 percent of Na3PO4, 1percent to 5 percent of Na2CO3, 0.1 percent to 1 percent of alkylphenol polyvinylether, 0.01 percent to 0.1 percent of silicone antifoam agent, 0.1 percent to 1 percent of fatty alcohol polyethenoxy ether, and the rest is water; the preparation method is as follows: detergent solution is prepared by the weight percent; the use method of the detergent of the invention is to keep the detergent temperature to be 30 DEG C to 80 DEG C when cleaning the oil sludge on the metal surface with the detergent. The detergent of the invention is applicable in cleaning the oil sludge of a plurality of typesof metal and alloys, and is characterized by strong cleaning capability, high cleaning speed, low foam, easy rinsing, no corrosion to the metal surface and low consumption.