In daily life, we often encounter the phenomenon of sudden fainting in the elderly. Because of its rapid onset and complex etiology, if it is not promptly and correctly identified and actively and effectively treated, it can delay resuscitation and even endanger life. 1, postural syncope This syncope is mainly caused by hypotension. Usually occurs when the position changes, such as when suddenly changing from a lying position to a standing position, because the action is too urgent, too Mongolian, making it difficult for the blood supply to the brain to keep up with the needs, resulting in transient cerebral ischemia and syncope. Syncope occurs suddenly, often accompanied by a drop in blood pressure, pale face, slightly increased heart rate, weak pulse, lying down or fainting on the ground, the symptoms can be quickly relieved. Once syncope occurs, the patient should be quickly laid down and placed in a head-low, foot-high position to promote blood pressure recovery. In severe cases, glucose can be given intravenously, and if the blood volume is low, attention should be paid to replenish the blood volume, and if necessary, appropriate amount of antihypertensive drugs can be given. For postural syncope, attention should be paid to avoid sudden changes in position. 2, vasovagal syncope Most often seen in frail patients, often in the standing or sitting position, more likely to occur in high temperature, poor ventilation, fatigue, hunger and other conditions. The typical manifestations of vasovagal syncope are brief dizziness, inattention, pallor, nausea, epigastric discomfort, cold sweat, panic, weakness, blurred vision, hearing changes and other prodromal symptoms before the onset of the disease. If the symptoms can be detected or alerted in time and lie down immediately, the symptoms can be relieved or disappear, otherwise loss of consciousness and fall to the ground will occur quickly. Syncope may last for several seconds or minutes, accompanied by pale face, cold sweat, decreased blood pressure, weak and slow pulse, weakness and dizziness after waking up. In severe cases, there may be amnesia and mental confusion, which lasts 1 to 2 days before recovery. To prevent vasovagal syncope, various triggers should be avoided, especially to prevent high stress during the two hours of noon and 6-7 pm. If prodromal symptoms appear, you should lie down immediately and never brace yourself. 3. Cardiogenic syncope is common in patients with wind heart disease, coronary heart disease and severe arrhythmia and heart failure. Due to the obstruction of cardiac blood displacement, myocardial ischemia or reduced cardiac output, resulting in cerebral ischemia and syncope. These syncopes often have an acute onset, sudden onset, with cyanosis, inspiratory difficulties, transient cardiac arrest, and slow pulse rate. Once cardiogenic syncope occurs, in addition to allowing the patient to lie down immediately, oxygen should be given, electrocardiographic monitoring, timely symptomatic treatment can reduce mortality. 4, hypoglycemic syncope Starvation or diabetic patients are prone to hypoglycemia, which can induce syncope in heavy cases. Its early symptoms are mainly weakness, flushing, cold sweat, hunger, and then confusion and syncope. This syncope starts slowly and recovers slowly, and the blood sugar is lower than normal. In case of hypoglycemic syncope, the patient should lie down immediately and take oral or intravenous hypertonic glucose solution. 5, cerebral syncope caused by a variety of cerebrovascular disease caused by insufficient blood supply to the brain, or neurological tissue itself, as well as due to some sedative sleeping drugs affect the vasomotor center. Most often seen in hypertension, nephritis, sudden increase in blood pressure, cerebrovascular spasm and fainting, often accompanied by convulsions, temporary paralysis and limb numbness. Once syncope occurs, quickly take the head low lying position, untie the collar, belt, and keep the room air circulation, whistling tract is unobstructed. Apply pressure or needling to the human middle point. At the same time, give blood pressure lowering treatment, while oxygen. 6, psychotic syncope Mostly caused by excessive anxiety or hysterical attacks caused by hyperventilation, blood oxygen decreased and lead to loss of consciousness. At the beginning of the attack, the patient may have a feeling of pressure in the precordial area, stuffiness, dizziness, numbness of the limbs, chills, twitching of the hands and feet, and blurred consciousness. Psychogenic syncope attacks are not related to body position and cannot be relieved by lying down without pallor. Once the attack can be given sedatives, the patient quiet syncope can be relieved, if drug treatment is ineffective available needles in the human middle or Yongquan point, so that the patient woke up. In short, once syncope occurs, let the patient rest flat in time is the basic principle. Patients should be sent to the hospital as soon as possible for examination to clarify the cause, and different treatments should be given for different reasons. For those who have frequent seizures and cannot find special reasons should avoid triggering factors, such as mental stimulation, fatigue, long standing, etc.