For an elderly person, who is always pinching and gesticulating with his hands when he sleeps, first of all, we should consider whether he is due to organic causes. (For example, the elderly may suffer from certain cerebrovascular diseases, then it may appear some mild disorders of consciousness at night, especially delirium, and the elderly may have some hallucinations during delirium attacks). For example, he may be able to see something that ordinary people cannot see, or hear something that ordinary people cannot hear, and he uses his hands to grasp, and there may be some clear objects. Then, in addition to cerebrovascular disease, we can also consider whether the old man has a history of alcohol consumption or smoking, and if it is alcohol consumption, whether there are some problems of consciousness caused by excessive alcohol consumption, and exclude the two organic causes of the disease. Then we analyze from the light degree, there is a possibility that the old man did not enter into this deep sleep, so in this light sleep process may be in a dreamy state, and then produce some behavior with simple physical disorders, then this situation may not need excessive treatment. If the cause is organic, you need to seek medical treatment or examination as soon as possible.