Sudden fainting and falling to the ground for a while and then returning to normal may be related to postural hypotension, or it may be due to hypoglycemic reaction, transient ischemic attack and other causes. In terms of treatment, it is mainly for the cause of the disease. 1. Postural hypotension: when patients get up suddenly from lying or squatting position, if the speed of getting up is too fast, resulting in low perfusion of the brain, it may induce postural hypotension and may show sudden fainting and falling to the ground. Generally, no special treatment is needed. If the symptoms recur frequently, they can be improved by applying drugs such as Midodrine and Fludrocortisone under the instruction of the doctor. 2. Hypoglycemic reaction: When hypoglycemic reaction occurs, the brain can not get sufficient energy supply, resulting in lack of oxygen to the brain tissue, it may show sudden fainting and fall to the ground for a while and then return to normal. Some bread, candy or sugary drinks can be eaten, which will help to relieve the symptoms of hypoglycemia quickly. If the symptoms are serious, glucose injection can be applied to raise blood sugar quickly. 3. Transient ischemic attack: usually caused by focal ischemia in local brain tissue, which can lead to sudden fainting and fall down and return to normal again. Clopidogrel, aspirin and other anti-platelet aggregation drugs can be applied to restore blood supply to the brain and improve clinical symptoms. Sudden fainting and falling to the ground for a while and then return to normal, should be taken seriously, as soon as possible to seek medical treatment, after clarifying the causative factors, under the guidance of the doctor to carry out treatment.