Objective To explore the influence of group management on compliance of lower extremities of elderly patients who underwent prostatectomy. Methods 60 patients were divided into the intervention group and the control group. While the control group was accepted normal nursing, the intervention group was accepted one-week group management. Results The intervention group performed better than the control group in awareness on the prevention of DVT and compliance of activities of lower extremities, and experienced less changes than the control group in skin temperatures, colors and ache of both lower extremities. These changes had statistical significant (P＜0.01). Conclusion Group management is an effective management mode, and improves parents' self-efficacy and compliance of lower extremities, is helping prevent DVT.