Abstract: Objective To study the effect of leg press with visual feedback on the recovery of post-traumatic knee arthritis. Methods Forty patients with post-traumatic knee arthritis in our hospital from July 2015 to December 2017 were randomly divided into treatment group and control group. There was no significant difference in baseline data between two groups. Patients in the control group were treated with straight leg raise exercise and the treatment group with leg press with visual feedback. The rehabilitation plan lasted for 4 weeks, once a day, 3 days per week, with 12 times in total. Visual analogue scale (VAS) was selected as the indicator of pain and hospital for special surgery knee score (HSS) as the indicator of motor function. Both VAS and HSS were assessed before and at 4 weeks after treatment. Results At 4 weeks after treatment, the VAS score decreased in both groups, and it was significantly lower in treatment group than control group(1.6±1.4) vs (2.6±0.9), P=0.011. While the HSS score increased in both groups, and it was significantly higher in treatment than control group(86.8±9.2) vs (79.2±11.5), P=0.025. Conclusion The leg press with visual feedback is effective in reducing the pain of knee joint, enhancing the motor function of knee joint, which is more effective than straight leg raise.