Ms. Wu, a 62-year-old female, suffered from Taiyang (EX-HN5) cold-damage disease. After taking three doses of Ephedra Decoction, the tendency of the disease slightly alleviated, but cold and fever occasionally recurred, and the illness persisted unresolved. Symptoms included fever and chills, dizziness, spontaneous sweating, and a floating and soft pulse. Although the tendency of the disease was not severe, it occurred three times a day, lasting about 40 minutes each time. During episodes of fever and chills, the body shivered without sweating, and the pulse changed from floating to floating, rapid, and weak. Since the episodes occurred at regular intervals, it was understood that the pathogenic factors were about to resolve. Therefore, Cinnamon Twig Two Ephedra One Decoction was prescribed. After one dose, all symptoms significantly improved, and after the second dose, the condition was completely resolved.