Headache, nausea and vomiting are very common symptoms of patients, which may be related to hypertension, acute cerebrovascular disease, functional headache, cervical spondylosis, cold, fever and intracranial infection, etc. The specific causes of headache, nausea and vomiting, the duration of symptoms and relevant examinations should be combined to clarify. If the headache is persistently strong and persistently not relieved, it is recommended to consult the neurology department and improve the head CT or head MRI to clarify the cause and deal with the cause. For example: 1. If the patient’s headache manifestation is mainly distension and pain, and the blood pressure is elevated, it should be considered to be caused by hypertension. 2. If the patient suddenly has severe headache, accompanied by jet vomiting, and impaired consciousness, it may be the occurrence of acute cerebrovascular disease. 3. If the patient has fever, headache, accompanied by nausea and vomiting, there may be intracranial infection. 4. If the patient has a history of functional headache, such as migraine, tension headache, neuropathic headache may appear the above symptoms. 5. If the patient has symptoms of muscle aches, cough and fever, it should be considered to be caused by cold.