A pharmaceutical preparation of Chinese herbal medicines for tonifying the kidneys and alleviating asthma is disclosed herein. The Chinese herbal medicines include Perilla Frutescens, Prunus Armeniaca, Glycyrrhiza Uralensis, Scutellaria Baicalensis, Coptis Chinesis, Tusilago Farfara, Stemona Sessilifolia, Fritillaria Cirrhosa, Pheretima Aspergillum, Psoralaea Corylifolia, Codonopsis Pilosula, Hordeum Vulgara, Massa Fermentata Medicalis, Schisandra Chinesis, and Gypsum. The preparation is used to treat thousands of patients suffering from asthma with an effective rate of 93%. The present preparation can relieve cough, expel phlegm, resist airway allergic inflammation reaction, improve pulmonary function, partial pressure of the oxygen in the blood, increase CD.sub.2, CD.sub.4, CD.sub.4/CD.sub.8, reduce I.sub.gE in blood, increase CAMP, reduce CGMP, stabilize mast cells, and inhibit the release of histamine, which make it capable of stopping an asthma attack.