Early to bed does not usually prevent obesity, but early to bed will usually have some benefits to the body. There are many factors that cause obesity, usually related to genetics, dietary habits, neurological factors, endocrine changes and other reasons, usually and sleep is not directly related. But going to bed early will have certain benefits to the body, long-term adherence can help maintain the body’s normal immunity, and help to improve the next day’s state of mind, enhance their own physical quality. Patients who are obese should choose a reasonable way to lose weight, it is recommended to reduce the intake of some high-fat, high-calorie food in daily life, eat more fresh fruits and vegetables, and reasonable exercise, do not over-dieting, so as not to affect their health.