Obesity is a chronic metabolic disease characterized by excessive accumulation of body fat or overweight, mostly due to the interaction of genetic factors, environmental factors and other factors. According to China’s body mass index (BMI) standards, a person with a BMI ≥ 28.0 kg/m2 is considered obese. It should be noted that the body mass index cannot accurately describe the distribution of fat in the body, nor can it distinguish between fat and muscle content, and muscular people are often easily misjudged. Obesity is not particularly serious, through the control of diet, appropriate exercise to regulate. For obesity is more serious, according to their own situation, under the guidance of the doctor by taking orlistat, or take the way of surgery to improve.