There are many causes of headache and weakness, and the common causes are mainly the following: First, cerebral infarction, due to cerebral blood circulation disorders leading to brain tissue ischemia and necrosis, thus causing neurological impairment, mainly manifested as dizziness, headache, weakness of one side of the limb, swallowing dysfunction and other manifestations, which can be treated symptomatically through measures such as thrombolysis, brain protection and nutrition of brain nerves. Second, cerebral vasospasm, due to persistent constriction of intracranial arteries, mainly manifests as hemiparesis, hemiplegia, aphasia, headache, etc. The diagnosis can be clarified by perfecting cerebral angiography, and the application of drugs such as nimodipine and prostaglandin can relieve cerebral vasospasm. Third, neurasthenia, mostly seen in patients with high mental stress, overwork and frequent late nights, with various clinical manifestations, mainly sleep disorders, headache, fatigue, memory loss, inattention, etc. Taking drugs such as glutamate and acupuncture to regulate the disorder of plant nerves can improve the symptoms.