Abstract:【Objective】 To compare two methods of retained anterior cruciate ligament reconstruction under arthroscopy, analyze the clinical effect of functional recovery of knee joint proprioception postoperative. 【Methods】 50 cases of anterior cruciate ligament reconstruction operation were randomly divided into observation group (n =25) and control group (n =25). The observation group was retained stump reconstruction in sheath in anterior cruciate ligament reconstruction; in the control group removed stump in anterior cruciate ligament reconstruction. Autologous hamstring tendon was selected as graft. Before operation and regular follow-up of patients, the improvement of function of the knee joint was evaluated by Lysholm, IKDC, Lachman, pivot shift test, KT-2000 and proprioceptive. 【Results】 Patients were followed up for 12-24 months, average 18 months. After 3, 6, 9, 12 months and the last follow-up: Scores were compared between the two groups, there were statistically significant differences in Lysholm (P<0.05). Scores was statistically significant differences in IKDC between the two groups (P <0.05). The two group of comparison measurement side-to-side (ipsilateral and contrala-teral KT-2 000) difference was smaller than 3mm(P <0.05). There were significant differences of proprioceptive angle repeat tests(P <0.05). There was no statistical significance between two groups by Lachman test, pivot shift test (P >0.05). 【Conclusion】 In the arthroscopy anterior cruciate ligament reconstruction, retained stump postoperative knee function, stability and proprioception recovered well and can obtain satisfactory clinical effect.