Fat around the stomach is clinically known as abdominal obesity, which may be caused by physiological factors such as diet, or by diseases such as polycystic ovary syndrome and Cushing’s syndrome. 1. Physiological factors: some people have irrational diet, eat more desserts, barbecue, hot pot and other high-calorie, high-fat food, or less exercise, often sedentary, lying down for a long time, resulting in calories gathered in the body can not be completely consumed, so that the abdominal fat increases, resulting in fat around the stomach. In addition, if patients take long time prednisone and other glucocorticoid hormone drugs, it will lead to the redistribution of fat in the body, which may also lead to fat around the stomach, patients mainly manifested in the face, back of the neck, trunk obesity, while the limbs are thin. 2. Polycystic ovary syndrome: the cause of the disease is still unclear, mostly related to genetic, environmental and other factors. Patients mainly manifested as menstrual disorders, hirsutism, acne, obesity, etc., obese patients are mostly abdominal obesity type, fat around the stomach. 3. Cushing’s syndrome: mainly due to the hypothalamus – pituitary – adrenal axis regulation abnormality, the patient will also appear to the performance of centripetal obesity, resulting in fat around the stomach, while the patient may also be accompanied by high blood pressure, muscle atrophy, acne, impotence, libido loss and other symptoms. There are many causes of fat around the stomach, if the patient is accompanied by discomfort, it is recommended to consult a doctor in a timely manner, to identify the cause of the disease, targeted treatment, so as not to delay the condition.