Painful limitation of the shoulder in hemiplegia has a bad influence to the shoulder function and the activity of daily living. The purpose of this study is to evaluate the effect of trigger point injection to the passive ROM of hemiplegic shoulder. Twenty hemiplegic patients were randomly divided into two groups that were ten and ten. Group A was injected to the trigger point of affected shoulder by 1% lidocaine combined to the therapeutic exercise and group B was applied by conventional therapeutic exercise only. Passive ROMs of the affected shoulders were checked before, 1 week, 1 month and 2 months after the therapy. Passive ROMs of them were more increased in Group A than in group B, which was statistically significant in all directions of the shoulder motion except the shoulder extension of 1 week. We thought that the trigger point injection is more helpful intervention to increment the passive ROM than therapeutic exercise only in hemiplegic shoulder manaement.