The invention discloses a medicament for treating burns and a preparation method thereof. In order to overcome the defects of slow response, weak pain ease, scar after curing, need of skin grafting and the like of the conventional medicament for treating the burns, the medicament takes the following components as raw materials: bezoar, musk, pangolin scales, giant knotweed, goldthread root, amur corktree bark, rhubarb, airpotato yam rhizome, bletilla, Japanese ampelopsis root, Chinese angelica, chrysanthemum, lindley eupatorium herb, Chinese loropetalum herb, Chinese arborvitae twig, liquoricroot, cattle horn, 55 percent ethanol, parabens and mountain water. The medicament is prepared by processing the rest components except the bezoar, the musk, the chrysanthemum, the 55 percent ethanoland methyl hydroxybenzoate respectively by a conventional processing method of Chinese medicaments, crushing, mixing and fermenting the rest components except the bezoar, the musk, the 55 percent ethanol and the methyl hydroxybenzoate, distilling the fermented materials, adding the bezoar, the musk, the 55 percent ethanol and the methyl hydroxybenzoate into the distilled materials, and uniformly stirring and bottling the mixture serving as spray and liniment for the burns. The medicament is used for treating the burns, scalds, caumas, explosive wounds and the like, and has the advantages of quick response, strong effects of killing pain, no scar after curing, and no need of skin grafting.