This book is the painstaking work of Dr. Yan Xianghao. This book takes cervical spondylosis, headache, heart disease, rhinitis, pharyngitis, toothache, acne, lupus erythematosus, jaundice, schizophrenia, rheumatic sciatica, neurodermatitis, and various cancer diseases as examples, and introduces in detail the specific operation methods, auxiliary prescriptions, precautions, etc. At the same time, a series of secret drugs of "detoxification therapy" are disclosed: 1. Yishan guohai powder; 2. Yidu powder; 3. Drive away toxic powder; 4. sore poison powder; 5. Kudingsan secret recipe; 6. Sanshengsan secret recipe and so on. The formula, dosage, preparation, usage, efficacy and clinical application of the above secret recipes are all introduced in detail in the book. Thanks to Mr. Yan's efforts, the detoxification therapy of Dan medicine has been passed down.