In addition to infants and young children sleep 18 hours a day is normal, children, middle school students, high school students, adults sleep 18 hours a day is not normal, belonging to the sleep is more, the formation of the reasons are mainly considered the following: 1, with the increase in the age of the elderly, may go out and less activity, there will be an increase in sleep. But in fact, the patient’s effective sleep does not reach 18 hours, the patient may lie in bed and not fall asleep, but the patient may be mistaken by other people to think that they have slept for 18 hours.2. Disease factors, such as cerebral vascular disease, cerebral blood supply insufficiency, and the sequelae of cerebral stroke will lead to the patient’s brain malfunction, so the patient will have the problem of more sleep. Respiratory diseases or mental factors such as anxiety and depression may cause patients to sleep more.