The invention discloses a compound pigeon manure traditional Chinese medicinal composition for treating allergic diseases, a preparation method and application. The traditional Chinese medicinal composition comprises 10 parts of pigeon manure, 0 to 1 part of impatiens balsamina, and an auxiliary including 0 to 1.5 parts of albizia julibrissin durazz. or 0 to 1 part of nostoc commune; or 10 parts of pigeon manure, 0.8 to 1 part of impatiens balsamina and 1.2 to 1.5 parts of albizia julibrissin durazz.; or 10 parts of pigeon manure, 0.8 to 1 part of impatiens balsamina and 0.1 to 1 part of nostoc commune; or 10 parts of pigeon manure, 0.8 to 1 part of impatiens balsamina, 1.2 to 1.5 parts of albizia julibrissin durazz. and 0.1 to 1 part of nostoc commune. Except the impatiens balsamina, each of the other medicinal materials is independently fried, and then each fried traditional Chinese herbal medicinal material is proportionally mixed and crushed with the impatiens balsamina to finally obtain fine powder; an oral powder or liquid finished product is prepared; or oral capsules are prepared; or a powdery product for a patient to inhale is prepared. The traditional Chinese medicinal composition is mainly used for treating respiratory allergies, comprising bronchial asthma, cough variant asthma and allergic rhinitis, or treating allergic skin diseases, comprising urticaria, anaphylactoid purpura and cutis indurativa tuberculosis. The diseases can be radically treated.