There are many reasons for the growing belly, which can be divided into the following aspects: 1, simple obesity, such as the consumption of large amounts of high-calorie food, and lack of exercise with little activity, may cause the accumulation of abdominal fat, which is manifested as a growing abdominal circumference, female patients during pregnancy can also appear to gradually increase abdominal circumference. 2, ascites formation, such as liver cirrhosis, liver cancer, pancreatic cancer and other diseases, tuberculous peritonitis, heart failure, kidney failure, and various malignant tumors in advanced stages, causing hypoproteinemia can cause ascites formation, resulting in a growing abdominal circumference, The abdominal tumors, various occupational lesions in the abdomen, such as gastric cancer, liver cancer and other diseases, can increase in abdominal circumference as the tumor grows. 4, pelvic tumors in women, such as uterine fibroids, ovarian cysts, teratomas, uterine cancer, ovarian cancer and other diseases, can lead to a gradual increase in abdominal circumference. 5.Abdominal distension, such as complete or incomplete intestinal obstruction, constipation, etc.