Bowel perforation is treated conservatively for fever, which may be due to bacterial peritonitis infection, acute hemorrhagic enteritis. It is usually treated with antibiotics and electrolyte supplementation, and ineffective immediate surgical treatment. 1. Bacterial peritonitis: Bowel perforation may cause peritonitis. Localized because of the contamination of food, there is bacterial inflammation stimulation caused by fever. Fever due to absorption of heat. It can be treated with levofloxacin, etc., along with electrolyte replacement. After conservative treatment fails, perforation suturing is usually used. If complicated by intestinal bleeding that cannot be easily controlled, intestinal resection needs to be considered. 2. Acute hemorrhagic enteritis: mainly associated with bacterial infection of intestinal perforation, allergy. Associated with C-type for the beta toxin produced by Weilbachia. Manifestation of fever, nausea, vomiting, with obvious peritonitis phenomenon, severe toxic shock. Fasting, gastrointestinal decompression, blood transfusion if necessary, and antibiotics such as metronidazole are required. If there is pus and blood from the puncture, hemorrhage, and signs of acute peritonitis, surgical resection is required. If perforation of the intestine occurs, medical and surgical treatment is required to avoid serious complications and to follow medical advice.