As the saying goes, “Nine out of ten hemorrhoids”, and in the same way, headaches are the same. Headache is one of the most common complaints in neurology. Currently, headaches are categorized into two main groups, one for primary headaches and one for secondary headaches. Primary headaches include migraine, tension-type headache, trigeminal autonomic headache and other causes of primary headache. Among them, migraine is the most common primary headache. Migraine is one of the common dysfunctional diseases in neurology, the pathogenesis of which is still unknown and may be related to genetic, endocrine, vascular and immune factors. Recent domestic epidemiological surveys have shown that the annual prevalence of migraine is 9.3%, causing economic losses of 672.7 billion yuan to the country, and seriously affecting the quality of life of patients because of its long-lasting course and recurrent attacks. Migraine is often co-morbid with a variety of psychiatric disorders, especially depressive disorders and anxiety disorders. There are various causes of secondary headaches, which are categorized into intracranial and extracranial lesions, systemic diseases and psychiatric disorders. Intracranial diseases include: infection, cerebrovascular disease, intracranial space-occupying lesions, etc. Extracranial diseases include: cranial lesions, cervical spondylosis and other cervical disorders; headache caused by eye, ear, nose and other diseases. Systemic diseases include acute infections, poisoning and other conditions. If you usually have headaches, there is no need to worry too much. First of all, calm down at home to measure blood pressure, to exclude high blood pressure caused by headache, to exclude sleep, mental stimulation and other factors, if the headache is still there, you can first consult the Department of Neurology to identify whether it is primary or secondary headache, and then according to the diagnosis of the clear use of medication. The causes of headaches vary greatly, and can be both chronic and critical, so it is important to make timely judgments, identify the causes of headaches, and then carry out etiological treatment.