H7N9 avian influenza is a new type of avian influenza, the early onset of the patient mainly manifested as high fever (38 ℃ or more), cough and other symptoms of respiratory tract infection, belongs to the scope of traditional Chinese medicine “warm pathology”. In 2013, the year of the Five Elements is a year of Yin and Water, which makes water, dampness, and cold evil easily injure the spleen and stomach, damaging the essence of the latter, making the body’s positive energy insufficient and its ability to resist evil reduced, making it susceptible to external infections. According to my clinical experience, I have prepared my own formula to prevent this disease for your reference and discussion. Cang Zhu 15g, Huo Xiang 10g, Wu Yao 10g, Artemisia annua 15g, Da Qing Ye 15g, Su Ye 6g, decoction