There are many causes of headache with vomiting: 1. Respiratory tract infections such as acute upper respiratory tract, sinusitis, etc. Most acute upper respiratory tract infections are caused by viral infections, accompanied by symptoms such as nasal congestion, runny nose, headache, nausea, etc. Sinusitis can present symptoms such as headache, runny nose, aggravated by cold. 2. Hypertensive encephalopathy, malignant hypertension, cerebral infarction, cerebral hemorrhage, etc. The above cerebrovascular diseases can cause increased intracranial pressure, resulting in symptoms such as headache and nausea. 3. digestive tract diseases such as gastritis, obstructive jaundice, cholecystitis, etc., often with abdominal pain, vomiting or diarrhea, etc. 4. other systemic diseases such as heat stroke, neurological headache, Job’s disease, etc. Appear headache and other symptoms, drink more water, first take blood pressure, temperature, etc., first observe whether there is fever, hypertension and other diseases, and then further treatment.