There is no specific statement on how long it takes for an elderly person to pass the danger period after bowel perforation surgery, and it has to be judged in context. Factors affecting this include the severity of the condition, whether the surgery went well or not, and the underlying physical condition of the elderly. There is also no specific concept of the postoperative danger period, which is generally defined as the period of time during which the patient’s vital signs regain stability. Bowel perforation varies from condition to condition, the surgery will be different, and the speed of healing after the surgery will be completely different, so the time to get through the danger period will be different. Generally speaking, if the operation is performed earlier, the perforation is smaller and the small perforation does not affect the blood supply to the intestinal wall, and the perforation repair will be more efficient in terms of damage to the body; while if the operation is performed later and the perforation is larger and a long segmental resection is performed, the operation will be more difficult and the damage to the body will be greater. Surgery that goes well, with less intraoperative bleeding, shorter operative time, and better wound closure is also favorable for postoperative recovery. Elderly people with good physical conditions, such as no high blood pressure, diabetes, or less severe conditions, will recover more quickly after surgery. To summarize, how long it takes for an elderly person to pass the dangerous period after surgery for bowel perforation should be judged by the attending doctor in the light of the specific situation.