In fact, it can be diagnosed by the following aspects: 1, headache site – side headache is mostly migraine and cluster headache; headache on one side, and deep in the sex, seen in intracranial occupational lesions. However, the painful side is not necessarily the side where the swelling limp is located; decussation, parietal, neck headache, may be power divination tumor. Frontal and whole headache may be hypertension-induced headache; whole head pain is mostly intracranial or systemic infectious diseases; superficial and limited headache is seen in eye, nose or odontogenic disorders. 2, the nature of the headache pulsating, throbbing head is seen in migraine, hypertension or fever headache; electric shock pain or stabbing pain is mostly neurological; pressure, tightness or pincer-like sensation for tension headache. 3, the degree of headache The degree of headache is not consistent with the severity of its condition. Severe headache often suggests trigeminal neuralgia, migraine or meningeal irritation pain. Mild or moderate headache may be a brain tumor. 4, the time of the headache The time of day the headache attack is often related to the cause of the headache. Wake up in the early morning attack, common in hypertension, intracranial space-occupying lesions, frontal anginal inflammation; headache more in the night attack, can make the patient wake up in the sleep pain, seen in cluster headache; headache in the afternoon aggravated in the upper beard sinusitis. 5, headache accompanied by severe vomiting, suggesting increased intracranial pressure, headache relieved after vomiting in migraine. Headache with dizziness is seen in vertebrobasilar insufficiency or cerebellar tumor. Headache with fever is common in intracranial or systemic infection. Headache with visual impairment is seen in glaucoma or brain tumor. Headache with neurologic dysfunction is seen in tension headache.