The invention discloses a preparation method of a paint remover. The preparation method comprises the following steps: S1, mixing mixed DBE (
Dibasic Acid Ester),
propylene glycol monomethyl ether andparaffin, and heating and melting the mixture to obtain a transparent molten paraffin mixture without block-shaped objects; S2, adding
solvent oil and
dimethyl carbonate into a reacting tank, and heating with stirring; S3, in the state of stirring and keeping the temperature of 36 to 42 DEG C, adding the molten paraffin mixture, dispersing, and mixing uniformly; S4, adding methyl
alcohol and
dichloromethane, insulating heat, dispersing uniformly, then adding
formic acid microcapsules and an emulsifying agent, and dispersing continuously; S5, adding a
thickening agent and an
aversive agent, insulating the heat, dispersing uniformly, filtering and discharging to obtain the paint remover. The paint remover prepared by adopting the technical scheme has the following advantages that: 1, formicacid is subjected to double microencapsulation, so that the
formic acid is prevented from corroding an iron tank, and a hidden danger of
corrosion perforation is eliminated; 2, a
propellant which canbe vaporized rapidly to absorb heat is optimized to reduce the temperature of a
coating surface and cooperates with the paraffin and the
thickening agent to retard the volatilization rate, the
loss rate and the like of a product.