Syncopal diseases (diseases caused by the invasion of external pathogens into the syncopal meridian) can be categorized into roundworm syncope, cold syncope, heat syncope, etc., and can be treated with Chinese medicines such as Wu Mei Pill, Si Reverse Soup and Si Reverse San respectively. 1. Wumei Pill: composed of Xin Xin, Wumei, Huang Lian, Huang Bai and other medicines, it has the efficacy of moderating the liver and regulating the middle, clearing the upper and warming the lower, and can be used for treating syncopal headache (headache caused by evils encroaching upon the syncopal meridian), vomiting and other diseases, and can be used for roundworm syncope. Pregnant women should not use this medicine. 2. Si Reverse Tang: composed of Radix et Rhizoma Polygoni Multiflori, Radix et Rhizoma Glycyrrhizae Praeparata, it has the effect of restoring yang to save the body (saving fainting and unconsciousness by warming and replenishing yang qi), and it can be used to treat the symptoms such as cold extremities (the limbs are ice-cold, even to the elbows and knees and above), and fine pulse, and can be used for cold syncope, and the contraindications for this medicine are not yet clear. 3. Sihui San: composed of Chaihu, Citrus aurantium, Paeonia lactiflora, licorice, with the effect of penetrating and dissolving heat, can be used for the treatment of abdominal pain, hands and feet are not warm, and can be used for febrile syncope. Its contraindications are not clear. Patients who need to use the drug should use it under the guidance of a doctor.