Simple obesity refers to obesity caused by no obvious endocrine metabolic diseases, also known as primary obesity, belongs to the non-pathological obesity, body mass index (BMI) significant obesity, will cause the body burden, will appear afraid of heat, sweating, even shortness of breath, easy fatigue, also more likely to occur coronary heart disease, hypertension, diabetes, gallstones and other diseases, women are also prone to amenorrhea, infertility and other phenomena. The causes of simple obesity are as follows: 1. genetic factors 2. factors of social environment 3. psychological factors 4. too little physical activity 5. too much food 6. neuroendocrine factors According to the distribution of fat in different parts of the body, simple obesity can be divided into abdominal obesity and hip obesity two. Abdominal obesity is also known as centripetal obesity, male obesity, visceral obesity, apple-shaped obesity, this kind of person fat is mainly deposited in the abdomen under the skin and the abdominal cavity, the limbs are relatively thin. The fat of the hip type obese person is mainly deposited in the buttocks and legs, also called non-centripetal obesity, female type obesity or pear-shaped obesity. From the above reasons, we can know that simple obesity people except for genetic factors is inevitable, other than most of them are related to their own reasons. It is recommended that people suffering from this situation in the usual try to choose low-fat light diet, spare time more physical exercise, etc., after all, obesity brings not only the surface shape huge impact, but also easy to trigger the occurrence of other diseases. For people with BMI over 32, most of them are accompanied by a variety of obesity co-morbidities, it is recommended to take weight loss surgery, using surgical treatment is currently the only long-term effective weight loss method for obesity, fundamentally solve the problem of food intake and nutrient absorption, not only to reduce weight, but also to treat a variety of metabolic diseases related to obesity. Clinical cases over the past 20 years have shown that in mature weight loss surgery centers, an average of 60-80% of excess body weight can be lost in one year after surgery, and with the follow-up guidance of a health manager, an ideal weight range can be maintained in the long term.