PURPOSE: The aim of this study is to verify the effectiveness of modified constraint-induced movement therapy(mCIMT) on upper function and activities of daily living in people with subacute stroke patients. METHODS: Eighteen participants, with subacute stroke that were randomly assigned to either the experimental group(n=9) or the control group(n=9). For subjects from the experimental group modified Constraint-Induced Movement Therapy was performed. exercise program, the patient trained in affected side upper extremity with restricted non-affected side for 1 hour and using in activity daily living for 4 hours for five times per week, during 4 weeks. For subjects from the control group, conventional upper extremity training was performed. Outcomes such as the box and block test(BBT), Fugl-Meyer motor function assessment(FMA), and modified Barthel index(MBI) were measured before and after training. Between-group and within-group comparisons were analyzed by using Independent t-test and Paired t-test respectively. RESULTS: These finding suggest that experimental group was significant increase in BBT, FMA, MBI(p<.05). In comparison of two group, experimental group was high upper function and activity daily living than control group. CONCLUSION: This study showed experimental group can be used to improve upper function and activity daily living than control group. Thus it indicates that mCIMT will be more improved through the continued upper extremity exercise program.