Headache is a relatively common clinical symptom that many people may have experienced. The choice of whether to use cold water compresses or hot water compresses needs to be based on the cause of the disease. If the headache occurs during a cold or fever, it is recommended to use cold water to lower the hypothermia and also to relieve the headache by wrapping an ice cube in a towel on the forehead or placing it on the back of the head to help lower the body temperature and relieve the headache. If the headache is caused by migraine or vascular headache, it is recommended to use hot water to compress the headache because this can improve blood circulation and relieve the headache. If the headache is caused by neurasthenia, it is recommended to use cold water compress, which can relieve the fatigue feeling of the brain and make the blood vessels stretch, which has a relieving effect on the headache.