The big belly may be caused by genetic factors, fat accumulation or disease. Some people are born with a bigger belly than others because of genetic factors. And work leads to sedentary, less exercise or because of endocrine diseases, etc., easy to cause small tummy fat accumulation. In addition, some disease occupancy will also lead to small belly looks increased, this situation requires timely access to the hospital for treatment. 1, genetic factors: some people are naturally larger than the normal small belly, through genetic influence on the offspring small belly is large, generally does not affect normal life, but also no need to treat, want to reduce down more difficult, through the exercise exercise can be a certain degree of relief small belly large; 2, fat accumulation: because usually diet is not restrained, too much consumption of high-calorie, high-fat food, while sedentary, sedentary, exercise is also relatively small, easy to cause the accumulation of fat, fat accumulation most began to occur in the abdomen, so some people may not look fat, but the small belly has been larger. If you want to reduce down, you should control the diet, eat less high-calorie, high-fat food, and properly increase exercise, such as sit-ups, jump rope, jogging, etc., to increase fat consumption, and in the long run will be able to reduce the small belly; 3, Cushing’s syndrome: due to endocrine disorders, resulting in too much glucocorticoid hormone, resulting in patients with centripetal obesity, thus causing a large small belly. Treatment requires the use of neurotransmitter drugs, such as carte blanche, growth inhibitors, or the use of glucocorticoid-inhibiting drugs such as methylprednisolone, etc. In serious cases, surgery can also be taken to remove pituitary adenomas; 4, gynecological diseases: such as polycystic ovary syndrome, the ovaries can be enlarged to more than 10cm due to lesions, resulting in an occupying tummy, need to cooperate with weight loss, the use of estrogen, progestin drugs to balance the body’s hormone levels, so as to relieve the enlarged tummy; 5, Cushing’s syndrome: due to endocrine disorders, resulting in patients with centripetal obesity, resulting in a large tummy. 5, tumor occupancy: tumors in the lower abdomen and pelvis tend to grow very large, such as uterine fibroids, ovarian cysts, etc. These tumors grow up and squeeze the surrounding tissues and organs, resulting in occupancy, resulting in a large belly, which can be clearly seen in the imaging examination, should go to the hospital for regular treatment in a timely manner, and the belly can generally return to normal after the tumor is removed. After the tumor is removed, the tummy can generally return to normal size.