There are many causes of obesity, including genetic factors, environmental factors and disease factors. 1. Genetic factors: obesity may be hereditary family, the body’s metabolic rate is low, compared with normal people, consume the same amount of food, the family hereditary obesity will be more prone to fat. 2. Environmental factors: including diet, exercise, emotions, etc., the intake of excess fat, part of the body for activity, in addition to excessive fat will be stored, can be consumed through the movement of this part of the lack of exercise will further form obesity. Spiritual influence on appetite, appetite abnormal hyperactivity, will also cause obesity. 3. Disease factors: some diseases can also cause obesity, such as hypothyroidism, Cushing’s syndrome, genetic metabolic disease, etc., can improve the relevant examination to confirm the diagnosis. It is recommended that the patient consult a doctor in a timely manner to clarify the cause of the disease and follow the doctor’s instructions for weight loss.