The purpose of this study was to find out the effect of muscular strength of quadriceps, hamstring of knee joint to isokintic, isotonic exercise treatment in stroke. Data was collected from 80 stroke from January 10. 1994 to april 10, 1994 in a Chungnam university hospital. The results were as follows; 1. Peak torque was higher isokinetic than isotonic excercise group both in quadriceps and hamstring of knee joint, 6 weeks, 8 weeks 10 weeks showed statistically significant in isokinetic exercise training group. 2. Total work was high isokinetic than isotonic exercise group both in quadricaps and hamstring of knee joint, 10 weeks 12 weeks showed statistically significant in isokinetic exercise training group. 3. Average peak torque and total work was higher isokinetic than isotonic excercise group both in quadriceps and hamstring of knee joint, showed statistically significant in isokinetic exercise training group (p<0.05).(p<0.01). Isokinetic and isotonic exercise treatment were needed for sutable walk training in stroke. But I think that better method was isokinetic exercise treatment in muscular strength and endurance.