The falling and swelling pain in the belly is mainly considered to be related to intestinal diseases, gynecological diseases, urogenital diseases and late pregnancy. 1. Intestinal diseases: If there are intestinal diseases, such as acute and chronic enteritis, it is usually easy to appear the symptoms of lowering and swelling of the stomach, and may also be accompanied by diarrhea. 2. Gynecological diseases: women suffering from adnexitis, pelvic inflammatory disease, etc., may have the symptoms of lowering and swelling of the stomach, and may be accompanied by increased secretion, odor, and so on. 3. Genitourinary diseases: If there are abnormalities in the genitourinary system, such as local tumors, or prostatitis, prostate hyperplasia, etc., it is also easy to produce the symptoms of a drooping and swelling stomach. 4. Late pregnancy: for women in the late stages of pregnancy, as the fetus increases in size and enters the pelvis, it is easy to cause a certain amount of extrusion on the abdomen, so it may produce the symptoms of a falling stomach and swelling pain. In addition to the above, there are other conditions that may lead to pain in the lower abdomen, it is recommended to go to the hospital for examination, follow the doctor’s instructions for targeted treatment, do not take care of yourself, so as not to delay the course of the disease.