Whether intestinal obstruction causes pain in the stomach of patients should be objectively analyzed according to the severity of the obstruction and different specific parts of the obstruction. First, if the patient is older and the peristaltic function of the intestine is obviously weakened, at this time, the incomplete intestinal obstruction is caused by dry stool blocking the colon, and the symptoms of obstruction are relatively mild, the stool in the intestine can be prompted to be excreted faster by oral lactulose and low pressure enema. Patients will not experience pain in the stomach and can achieve better results clinically. If the patient has complete intestinal obstruction caused by malignant tumor of small intestine, a large amount of gastric contents cannot be emptied completely, which will make the pressure in the stomach rise significantly and make the patient have obvious pain in the stomach. Patients need timely surgery to remove small intestine tumor and restore intestinal patency in order to relieve the painful symptoms in the stomach.