The price of abdominal plain film is 70 yuan. The abdominal plain film is mainly to understand whether there is obvious accumulation of gas and fluid in the intestinal canal in the abdominal cavity or whether there is a gas-fluid plane to see whether there are signs of intestinal obstruction. In addition, abdominal plain film can also look at whether there is free gas under the diaphragm, which can clarify whether there is a possibility of perforation of the digestive tract. If the patient’s clinical symptoms are serious and the abdominal plain film does not indicate any abnormality, the doctor will recommend further CT examination of the abdomen to clarify whether there are clear lesions around the abdominal organs and intestinal canal.