If amenorrhea at the age of forty needs to be regulated, one can take Da Tian Yuan Decoction, Zuo Gui Wan, Sen Ling Bai Zhu San, Gui Ren Wan, Diaphragm Downward Expelling Blood Stasis Soup, Wen Jing Tang, Dan Xi Formula for Treating Phlegm Dampness and so on, according to the different types of evidence. 1. Kidney qi deficiency: amenorrhea accompanied by tinnitus, dizziness, lumbar and knee soreness, frigidity of libido, frequent urination, etc., take Great Tonic Yuan Decoction. 2. Kidney Yin deficiency: amenorrhea with dizziness, tinnitus, hot hands and feet, hot flashes (a burst of fever), night sweating (abnormal sweating after going to sleep, but sweating stops after waking up), heel pain, etc. Take Zuo Gui Wan, a proprietary Chinese medicine. 3. For amenorrhea with spleen deficiency accompanied by weakness of limbs, lethargy, loss of appetite, loose stools, abdominal distension, etc., take Chinese patent medicine Ginseng Ling Bai Zhu San. 4. Essence and blood deficiency: amenorrhea accompanied by dizziness, palpitation (rapid heartbeat, often accompanied by panic), insomnia, yellowish color (yellowish color without luster), etc., take Gui Kidney Pill. 5. Qi and blood stagnation: amenorrhea accompanied by pain in the abdomen, depression, irritability, sighing, etc., take Diaphragm Downward Expelling Blood Stasis Tang. 6. Cold stagnation: amenorrhea accompanied by cold pain in the abdomen, refusal to press, fear of cold, pale color, etc., take Wen Jing Tang. 7. Phlegm-dampness stagnation: amenorrhea is accompanied by excessive discharge, obesity, fatigue, dizziness, etc. Take Danxi formula for phlegm-dampness. Taking the above medicines should be guided by a doctor.