The invention belongs to the field of traditional Chinese medicine preparations, and particularly relates to a traditional Chinese medicine preparation for treating the lower respiratory tract infections of infants. The preparation is characterized by being prepared from the following raw materials in parts by weight: 4-8 parts of Thunberg fritillaria bulb, 10-18 parts of snakegourd fruit, 6-12 parts of lepidium seeds, 6-10 parts of cortex mori radicis, 6-10 parts of cortex lycii radicis, 5-8 parts of balloon flower, 3-8 parts of earthworm, 3-8 parts of arisaema cum bile, 4-8 parts of bitter almond, 6-10 parts of honey-fried loquat leaf, 6-10 parts of radix scrophulariae and 3-8 parts of licorice. The Thunberg fritillaria bulb and the snakegourd fruit capable of removing heat, reducing phlegm and relieving cough and asthma are used as monarch drugs, the lepidium seeds and the cortex mori radicis capable of removing heat from lung, relieving asthma and inducing diuresis to alleviate edema are used as ministerial drugs, the cortex lycii radicis, the earthworm, the arisaema cum bile, the bitter almond, the honey-fried loquat leaf and the radix scrophulariae capable of removing heat, reducing phlegm, relieving cough and asthma and relieving convulsion for defecation are used as adjuvant drugs, the balloon flower and the licorice are conductant drugs and are also adjuvant drugs, and all the drugs jointly take the effects of clearing and descending metalic pneuma so as to relieve asthma. The invention has the efficacies of removing heat, reducing phlegm and relieving cough and asthma and has the advantages of accurate and rapid curative effect, high cure rate and the like in treating the lower respiratory tract infections of infants and convenient for taking.