The invention relates to a manufacturing method of a raw lacquer base damping fin, and aims to obtain a green environment-friendly ecological energy-saving raw lacquer base damping fin. The damping fin is a viscoelastic material pasted on the metal surface, and mainly plays the roles of vibration and noise reduction and thermal insulation. The method completely gets rid of the dependence on petroleum fossil energy, and the manufacturing process does not need addition of organic solvent or other metal ions, or heating for curing or cooling, fully employs natural drying and curing, so that the damping fin has significant characteristics of ecological green energy-saving new material; and secondly, the raw lacquer base damping fin has outstanding thermal stability, does not decompose under high temperature and does not emit carcinogenic substances such as organic solvents and heavy metals to the atmosphere in the usage process.