The invention provides a traditional Chinese medicinal composition for skin injuries, and a preparation method and an application thereof. The traditional Chinese medicinal composition for skin injuries is prepared from, by weight, 2-7 parts of litharge, 1-3 parts of dried alum, 1-2 parts of mercurous chloride, 10-30 parts of calcined pyrolusite, 50-150 parts of calcined red halloysite, 1-5 partsof natural indigo, 2-5 parts of borneol, 10-30 parts of calamine and 20-40 parts of calcined gypsum. The invention provides a traditional Chinese medicinal composition for mucous membrane canker, andan application thereof. The traditional Chinese medicinal composition for mucous membrane canker is prepared from, by weight, 1-3 parts of dried alum, 10-30 parts of calcined pyrolusite, 50-150 partsof calcined red halloysite, 1-5 parts of natural indigo, 2-5 parts of borneol, 10-30 parts of calamine and 20-40 parts of calcined gypsum. The traditional Chinese medicinal compositions have the advantages of significant effects, short treatment course, no scar formation, no pigment deposition, wide applicability for people, suitableness for infants and women in the menstrual, pregnant and lactating stages, no toxic or side effects, no untoward effects, no anaphylactic reactions, and no dependence or medicine resistance. The processing technologies of the traditional Chinese medicinal compositions have the advantages of simplicity, small cost, no production consumption, and convenience for industrial large-scale production.