Objective To investigate the effect of nursing intervention on bowel cleaning of patients with senile constipation during electronic bowel preparation for colonoscopy.Methods Forty patients with senile constipation undergoing routine bowel preparation for colonoscopy were treated with nursing intervention.The bowel cleaning effect and the satisfaction degree after bowel cleaning were assessed. Results The qualification rate of bowel cleaning reached 92.5%,and the excellence rate of cleaning comfort 95.0%.Conclusion The pertinent nursing intervention to the elderly patients with constipation undergoing electronic colonoscopy may improve the rate of cleaning the bowels as well as their level of comfort so that the patients can live smoothly through the electronic colonoscopy.