The present invention relates to the field of traditional Chinese medicine, in particular to a plaster for the treatment of burns, scalds and infected wounds caused by various reasons and the preparation method. The present invention includes the following components: sophora japonical, membranous milkvetch root, bletilla striata, garden burnet root, ovientvine, Chinese arborvitae twig, sappan wood, diverse wormwood herb, gardenia jasminoides ellis, Chinese honeylocust spine, castor bean, frankincense, litharge, borneol, camphor and patchouli oil; the specific preparation steps are that: (1) soaking-the sophora japonical, membranous milkvetch root, bletilla striata, garden burnet root, ovientvine, Chinese arborvitae twig, sappan wood, diverse wormwood herb, gardenia jasminoides ellis, Chinese honeylocust spine, castor bean, frankincense and patchouli oil are weighed according to the mix ratio by weight and are placed into a jar for soaking for 7 days; (2) frying - the soaked medicines are placed into an iron pot for frying for 60 to 80 minutes; (3) oil refining - the medicine residues are removed, the oil refining is started, litharge is added after 60 to 90 minutes of the pot boiling, then the pot is removed from the fire till the litharge melts down; (4) cooling - when the medicines which are removed from the fire are cooled down to 60 to 80 DEG C, then the borneol and camphor which are ground into the fine powder are placed into the pot for even agitating; (5) soaking - the medicines which are removed from the pot are placed into the water for soaking for 24 hours for use.