The invention relates to a Chinese herbal medicine composition for treating common bacterial diseases of chickens. The Chinese herbal medicine composition is a powder prepared from the following raw materials in parts by weight: 4-6 parts of cordate houttuynia, 4-6 parts of folium isatidis, 3-4 parts of oregano, 3-4 parts of juncus roemerianus, 2-4 parts of abrus cantoniensis hance, 1-2 parts of centella asiatica, and 1-2 parts of licorice root. The Chinese herbal medicine composition is used for treating common bacterial diseases of chickens, such as colibacillosis, the chronic respiratory disease, acute gastroenteritis and salmonellosis, and has the characteristics of high cure rate, good effect, safety, no toxic or side effect, and good convenience in use.