The invention discloses a traditional Chinese medicine preparation for treating infantile influenza and a preparation method, and belongs to the field of traditional Chinese medicine. The traditional Chinese medicine preparation is prepared from all-grass of alopecurus aequalis Sobol., giantreed juice, all-grass of eulaliopsis binata(Retz.)C. E. Hubb., Japanese polypody rhizomes, herb of klein cinquefoil, herb of savatier monochasma, all-grass of leontopodium forrestianum Hand.-Mazz., leaves of ford nervilia, herb of thunberg's lepisorus, dichotomy forked ferns, wild chrysanthemum flowers, underleaf pearls, roots of conyza japonica (Thunb.) Less., roots of beautifulflower uraria, herb of elodea-like St.John's wort and all-grass of straightstalk alpine meadowrue. According to the traditional Chinese medicine preparation, the compatibility is suitable, complementarity is achieved, the effects of clearing heat, removing dampness, promoting blood circulation to remove meridian obstruction, moistening the lung to arrest cough, checking diarrhea, cooling the blood, stop bleeding, inducing diuresis, reliving pain and the like are achieved, all the medicines are combined to be capable of directly reaching to the lesion location, the traditional Chinese medicine preparation has the advantages of being quick in effect, high in cure rate, free of toxic and side effects, safe and convenient for treating the symptoms of more boogers, low back pain, body pain, abdominal pain, nausea and vomiting, coughing, diarrhea, headaches, fatigue, pharyngalgia and the like caused by the infantile influenza, the price is low, preparation is easy, and the traditional Chinese medicine preparation can be widely applied to clinic treatment of the infantile influenza.