Generally, after gastric perforation surgery, it is normal for patients to have a low-grade fever for a week. After gastric perforation surgery, some of the stomach contents enter the abdominal cavity, resulting in fever due to absorption of the abdominal mucosa. Therefore, fever after gastric perforation surgery is relatively common. The fever is usually low and lasts for about a week before it stops. However, the exact time varies depending on the patient’s condition and physique. For patients after gastric perforation surgery, they should do routine anti-inflammatory and antibacterial, such as oral amoxicillin under the guidance of a regular doctor to prevent and control infection. Cefuroxime, ciprofloxacin and other antibiotics can be used intravenously to prevent infection if necessary. Patients should also drink more water, eat more fresh fruits as well as vegetables, and refrain from eating spicy, stimulating foods. When the symptoms mentioned above worsen, the patient should consult the doctor in time for early treatment.