Abstract: Objective To study the regularity of pain in patients after total robotic cardiac surgery by observing its characteristics and formulate its effective intervention measures. Methods The pain in 289 patients on days 1-4 was assessed according to the visual analogue scale. The causes of pain were analyzed. Results The percentage of patients with mild pain on days 1 and 4, moderate pain on days 2 and 3, and severe pain was 81.0% and 67.8%, 51.9% and 50.5%, and 7.3% and 2.8%, respectively. The most common cause of pain was surgical wound (accounting for 96.5% and 84.1%, respectively, on days 2 and 3 after operation), followed by intrathoracic drain tube traction, body position change, lung physical therapy, shoulder and back pain. Conclusion The regularity of pain can be observed in patients after total robotic cardiac surgery and nursing measures should be taken to alleviate the pain in different individuals.