There are many causes of vomiting and drowsiness: first, cerebrovascular diseases, such as cerebral hemorrhage, subarachnoid hemorrhage and other diseases can cause increased intracranial pressure, resulting in jet vomiting, and in severe cases, can also cause drowsiness, coma and other symptoms, need to improve the head examination to clarify the specific cause of the cause of treatment. Second, intracranial infection, the disease is caused by bacteria, viruses and other microbial infestation caused by brain tissue infection, mainly manifested as severe head pain, chills, high fever, nausea and vomiting, serious cases can appear drowsiness, coma and other symptoms, cerebrospinal fluid examination can clarify the cause of the disease. Third, alcoholic encephalopathy, the disease is due to long-term heavy alcohol abuse caused by central nervous damage, can appear psychiatric symptoms, can also cause vomiting, drowsiness and other clinical manifestations, its treatment requires abstinence from alcohol, can be applied to protect the brain, nourishing brain nerve drugs symptomatic treatment.