People lying flat when the stomach has a sense of pressure, often due to obesity, abdominal fluid, abdominal cavity has a placeholder and so on causes, specific as follows: 1, obesity: patients with overweight, the abdominal fat layer will be thicker, then lying flat will have a sense of pressure. Patients need to actively control the diet, and increase physical exercise to reduce the fat layer, will reduce discomfort. A small number of patients can be treated with liposuction, but they need to go to the medical plastic surgery department of regular hospitals for treatment; 2, there is fluid in the abdominal cavity: for example, hepatic ascites, etc., and they need to go to the hospital to check the ultrasound of the abdomen or CT of the abdomen to make it clear; 3, there is occupation in the abdominal cavity: for example, intestinal tumors, mesenteric tumors, retroperitoneal tumors, etc., and they need to go to the hospital to check the CT of the abdomen and the gastrointestinal microscopy, etc., and sometimes they need to do enhanced scanning or contrast examination. or contrast examination.