Allergy is one of the common chronic recurrent diseases in life, the incidence of which is also increasing, reducing the quality of life of people with allergies. The Chinese medical record of this disease has a long history, focusing on the treatment of both symptoms and root causes, while Western medicine is based on the control of symptoms, treating symptoms rather than the root cause. Professor Huang Heqing is good at treating lung diseases with integrated traditional Chinese and western medicine. Now, through learning from teachers in outpatient department, he has summarized his clinical experience in treating related allergic diseases with allergy decoction, and attached three medical cases below.