Subarachnoid hemorrhage is one of the common cerebral hemorrhages, and 75% to 80% of subarachnoid hemorrhages are caused by ruptured intracranial aneurysms, with a mortality rate of 50% to 70% and varying degrees of disability in surviving patients. In addition, subarachnoid hemorrhage can be caused by abnormal vascular networks at the base of the brain, hypertensive arteriosclerosis, and some hematologic disorders. Subarachnoid hemorrhage can occur at any age, but is most common in young adults, most of whom have a history of headache and often have acute attacks during emotional stress or exertion, such as coughing, straining to defecate, strenuous exercise, overexertion, alcohol consumption, and cold weather. Common symptoms include sudden onset of severe headache, vertigo, vomiting, back pain, leg pain, irritability, diplopia, fear of light, fear of sound, delirium or convulsions, and in severe cases, coma. Very few patients have onset in the quiet state, and the clinical manifestations are atypical in elderly patients over 60 years old. Cerebral angiography is the most valuable diagnostic tool for subarachnoid hemorrhage, and cerebral angiography (DSA) is the most valuable method to confirm the cause of subarachnoid hemorrhage, especially intracranial aneurysm. Therefore, DSA should be performed as early as possible to determine the cause of the hemorrhage, decide the treatment and determine the prognosis, if the condition allows. Other methods such as CT angiography and magnetic resonance angiography can be used for the diagnosis of aneurysms and cerebrovascular malformations. Both have comparable sensitivity in detecting aneurysms. The former has the advantages of fast and less invasive imaging; while the latter has the advantage of not requiring contrast, so it is suitable for patients with impaired renal function. However, the examination takes a longer time and is not suitable for critically ill patients. In addition, since some blood disorders are the cause of subarachnoid hemorrhage, hematological examinations such as blood routine and coagulation function are also necessary, and further tests such as liver and kidney function can be done if necessary in order to understand the patient’s general condition. Recurrent headache sufferers are a high-risk group The prevention of subarachnoid hemorrhage should first focus on headache sufferers. People with recurrent headaches should always be examined at a hospital to detect hidden problems and prevent subarachnoid hemorrhage. If someone around you is experiencing any of the symptoms described above due to emotional stress or exertion, the first thing to think about is whether there is a possibility of subarachnoid hemorrhage and transport the patient to the nearest hospital in the shortest possible time. In the process of transporting patients, especially those with impaired consciousness, the following should be noted: 1. Keep the patient’s airway open, with the head in a high lateral position to prevent the tongue from dropping back. 2.Clean the vomit from the patient’s mouth in time to prevent inadvertent aspiration into the airway. 3.Avoid vibration as much as possible during transport. Treatment of subarachnoid hemorrhage is divided into two categories: conservative treatment and surgical procedures. The former is based on medication and also includes cerebrospinal fluid drainage, absolute bed rest for 4-6 weeks, keeping quiet and avoiding forceful defecation, coughing, sneezing and emotional excitement. The aim is to reduce intracranial pressure, prevent hydrocephalus, prevent rebleeding and cerebral artery spasm and cerebral ischemia. The aim of surgical treatment is to remove the cause of the disease, which is important to stop the bleeding and prevent rebleeding. Subarachnoid hemorrhage belongs to the range of stroke and true headache in TCM, and is often divided into liver-yang hyperactivity type, yin-deficiency-yang hyperactivity type and phlegm-deficiency-obscured orifice type, etc. For acute onset manifesting as heat proof manifestation, Angong Niuhuang Pill can be taken. With the advancement of medical technology, more and more patients are undergoing surgical or interventional treatment. Through evidence-based treatment, TCM has a better role in alleviating postoperative symptoms.