Medicine for treating trachitis and bronchitis and preparation method thereof

The invention discloses a medicine for treating trachitis and bronchitis and a preparation method thereof. The medicine is prepared from the following raw materials in parts by weight: 15-90 parts of fewflower lysionotus herb, 10-80 parts of aster and 5-40 parts of flos farfarae. The preparation method comprises the following steps: sampling the various raw materials in parts by weight, respectively adding water for decocting for three times, mixing the decoction, standing, concentrating the supernatant, cooling, adding dextrin and sugar, uniformly mixing, granulating, drying and performing split charging. The medicine provided by the invention has the characteristics of obvious curative effect, stable effect, safety, no toxicity, zero side effect and low price. According to clinical application of 60 cases, the total effective rate is 98.3 percent, and the administration is convenient and rapid.