Headache with jet-like vomiting is considered to be a case of increased intracranial pressure, but there are many diseases that cause increased intracranial pressure, which need to be analyzed and judged in conjunction with the patient’s form of illness and other symptoms of the patient, but in any case, a headache with jet-like vomiting is a relatively urgent symptom, and the patient needs to see a hospital immediately for examination and judgment of the disease. This disease is most commonly considered to be a central nervous system infection such as intracranial infection, encephalitis, meningitis, etc. It is also seen in cerebrovascular accidents, such as acute cerebral hemorrhage that can also lead to increased intracranial pressure, and the patient will have a severe headache with jet vomiting. It is also seen in trauma, cranial hypertension, hypertensive encephalopathy can also lead to headache with jet-like vomiting, so it is important to seek timely medical attention for examination and treatment.