Although there are more and more obese people nowadays, but because of the increasing awareness of health, so the method of weight loss is becoming more and more important, because weight loss is not only for making oneself more beautiful, but also for the health of the body, so excessive dieting, abuse of diet pills and other weight loss methods are becoming less and less marketable. With the popularity of weight loss surgery, this method of losing weight through surgery is gradually coming into view, but it is controversial as to whether it is healthy or not. Some people think that although weight loss surgery has a high efficiency, but to modify the gastrointestinal tract, and even limit their absorption function, and does not comply with the concept of healthy weight loss. But those who are severely obese and medical practitioners hold the opposite view, because obesity can bring numerous concomitant disorders, which are significantly more harmful than the effects of weight loss surgery. Some obesity complications can cause serious harm, such as sleep apnea syndrome, cardiovascular diseases, diabetes, etc., and can even lead to sudden death. Although weight loss surgery may cause certain restrictions on diet and absorption, it can effectively treat these diseases and bring the body back to a healthy state. As long as it does not affect health and can effectively solve the problem of obesity can be seen as a healthy way to lose weight. Although weight loss surgery modifies a person’s gastrointestinal tract, it does not affect the normal needs of the body, and it can also be supplemented by micronutrient supplements to the body, and generally does not encounter problems such as malnutrition, so it is also a healthy and feasible method of weight loss.