Abstract: Objective: To explore the facilitating and hindering factors for the establishment of rehabilitation behaviors in patients with low anterior resection syndrome (LARS) after anal-preserving surgery for rectal cancer from discharge to the stable phase of home-based rehabilitation. Methods: Using convenience sampling, 21 patients with LARS who underwent anal-preserving surgery for rectal cancer from June to October 2024 were selected for semi-structured interviews. Based on the COM-B theoretical model, phenomenological research methods were employed, and the data were analyzed, summarized, and themes were extracted using the Colaizzi 7-step analysis method. Results: The facilitating factors for rehabilitation behaviors during the transition period included: (1) opportunity factors, such as professional medical care support and diverse social support; (2) motivation factors, such as perception of rehabilitation benefits, positive self-management ability for intestinal symptoms, and positive value beliefs. The hindering factors included: (1) ability factors, such as information asymmetry and professional barriers, symptom stress, and lack of rehabilitation knowledge; (2) opportunity factors, such as unfavorable rehabilitation environments, economic burdens, and role behavior restrictions; (3) motivation factors, such as fear of cancer recurrence and avoidance of exercise. Conclusion: During the transition period of patients with LARS after undergoing anal-preserving surgery for middle and low rectal cancer, scientific professional nursing knowledge and diverse social resource support should be provided to help them establish positive value beliefs and enhance self-care abilities. At the same time, creating a favorable rehabilitation environment will assist patients in establishing correct rehabilitation behaviors and improving rehabilitation compliance.