The invention discloses a dressing for promoting burn and scald wound healing, which comprises the following raw materials in parts by weight: 17-23 parts of polyvinylpyrrolidone, 2-8 parts of caffeic acid-4-3-hydroxypropyl morpholine ester, glutathione 5-10 parts of peptide, 0.5-0.8 parts of chlorella extract, 0.3-0.5 parts of L-lactic acid, 0.5-1.2 parts of asiaticoside, 0.4-0.8 parts of nicotinic acid inositol, 0.5-1 part of hydroxyethyl urea, Laurocaprazine 0.35-0.7 parts, film-forming agent 1.5-3 parts, borneol 2-5 parts, hydrogenated lecithin 1-4 parts, purified water 40-50 parts. The dressing provided by the invention uses polyvinylpyrrolidone as a base, and caffeic acid-4-3-hydroxypropylmorpholine ester and glutathione are added to promote rapid healing of burn wounds. Chlorella extract and L-lactic acid can regulate the synthesis of collagen in the wound, inositol niacin can relieve the edema of the burn and scald wound, and asiaticoside and hydroxyethyl urea can prevent the dressing and wound adhesion from damaging the new tissue. The invention also provides a preparation method of a dressing for promoting burn and scald wound healing, the preparation process is simple and easy to operate, and it is convenient for commercial production and application.