Sudden cerebral hemorrhage can be caused by internal and external causes. External causes are mostly common with head trauma, where patients complain of accidentally falling on their heads and feeling headache; internal causes are mostly caused by high blood pressure, emotional excitement, seasonal changes and sudden increase in exercise, etc. The symptoms include the following: 1. headache: as the main manifestation; 2. nausea and vomiting: mainly jet vomiting, that is, repeated, multiple, jet vomiting. When patients have head trauma, they must pay enough attention to go to the hospital to take X-rays in time to exclude brain hemorrhage. For older patients, it is important to pay attention to the seasonal change of clothing to avoid the sudden cold and heat that can cause stimulation of the blood vessels in the brain. Elderly people who are short-tempered should pay attention to restraint to avoid brain hemorrhage caused by sudden emotional excitement.