Patients with small intestinal effusion can be treated by the following methods: i. Abstain from diet and leave a gastric tube in place, which can aspirate the fluid and gas in the stomach through continuous decompression. Fasting can avoid the secretion of large amounts of digestive juices after the patient eats, which can aggravate the symptoms of abdominal distension and abdominal pain. Second, the rectal mucosa can be stimulated by means of low-pressure enema to speed up the peristalsis of the intestinal canal and promote the discharge of feces and gas in the intestinal canal, which can effectively relieve the performance of gas and fluid accumulation in the small intestine. Third, the patient can apply hot aman pack, Xuanmian powder, ice chips and other traditional Chinese medicines externally on the abdomen to improve the local blood circulation, promote the edema of the small intestinal wall to decrease, make the accumulated gas and fluid in the small intestine metabolized faster, and improve the abdominal pain symptoms of the patient. Fourth, inhibit the secretion of intestinal fluid by applying drugs such as oxytetracycline to avoid the increased secretion of digestive fluid, which aggravates the manifestation of gas and fluid accumulation in the small intestine and causes the patient’s symptoms of abdominal pain.