For always sleepy, want to sleep specifically what is going on, there are roughly the following kinds of analysis: first, physiological increased sleep, mostly seen after exertion, excessive exercise and usually mental stress, and often stay up late, social or mental tension, do not need excessive attention and intervention treatment, through good rest, this situation will be able to improve. Second, the subhealth state, is now a very common fatigue syndrome in the population, is no organic organ lesions, patients with increased sleep, accompanied by fatigue, drowsiness and other symptoms. This disease is also mainly self-limiting and can be relieved by good rest and self-adjustment. Third, pathological increased sleep, always sleepy and wanting to sleep should exclude some diseases, such as anemia, hypothyroidism, kidney disease, liver disease and chronic wasting disease, which are more common in clinical practice.