Objective To investigate the effect of lower-extremity strength training and knee joint control training on genu recurvatum and function of lower limbs in the stroke patients. Methods According to our inclusion and exclusion criteria, 15 subjects at an average age of 54.3 years were selected in this study. They were randomly divided into treatment group (n＝8) and control group (n＝7). Conventional rehabilitation training was given to the both groups, and the resistance training of quadriceps femoris and hamstrings as well as the knee joint control training were performed on the treatment group additionally. The degree of genu recurvatum, the score of Fugl-Mayer motor assessment (FMA), modified Ashworth scale (MAS) for grading spasticity, maximum walking speed of 10m, mean of step length, maximum isometric strength of quadriceps femoris and hamstrings were measured in the 2 groups before and 6 weeks after training. The results were compared between the 2 groups. Results After 6 weeks’ training, the treatment group had the degree of genu recurvatum decreased by 8.1° (correct rate accounting for 68%, P＜0.01), FMA score increased by 14.43, the MAS decreased by 1 grade in average ( better than the control group, P＜0.05), and the maximum walking speed in 10m increased by 19.19m/min and the mean step length elevated by 14.11 compared with the control group (P＜0.01). The strengthes of quadriceps femoris and hanmstrings were increased by 48.26% and 48.08% respectively (P＜0.05) in the treatment group, significantly improved compared with the control group (P＜0.01). Conclusion Strengthening the training in quadriceps femoris and hamstrings as well as knee joint control training improves the state of genu recurvatum, and is helpful to the activities of the lower limbs in the stroke patients.