Objectives: To investigate the effect of core-stability training to improve balance and postural control ability for stroke patients. Methods: Subjects were 20 Stroke patients attending to a rehabilitation hospital in Gyeonggi-do. They were divided into the two groups; 10 interventional (case) and 10 control, and treated for 30 minutes a session, 5 times a week for 8 weeks period. The case group were treated with core-stability training and control group with the traditional training, and they were evaluated balance and postural control ability. BBS (Berg balance scale) and PASS (postural assessment scale for stroke) were used to assess balance and postural control ability, respectively. Results: In case group both the score of BBS and PASS showed significant differences between at pre and post treatment(p<0.01). Instead, in control group only BBS showed difference(p<0.05). That means, more improvement showed in case than control group. Conclusion: This core-stability training considered to be effective to improve postural balance and integration ability for stroke patients.