This study is designed to compare the effectiveness of Modified Constraint-Induced Movement Therapy Versus Conventional Physiotherapy for improving involved upper extremity movement efficiency in Adult Hemiplegic patients. To know the effectiveness of Modified Constraint-Induced Movement Therapy on Upper Extremity dysfunction for management of Adult Hemiplegia. The study is carried out at the Vihar Hospital, Anand. 40 patients of adult hemiplegia were recruited into two groups after inform consent was taken from all patients. Group 1: Experimental group received Modified Constraint-Induced Movement Therapy (mCIMT) which includes active/passive Mobility exercises, Muscle Stretching, Muscle Strengthening, Weight Bearing Exercises, Task-specific and Fine motor practice of affected upper limb. Group 2: control group received conventional physiotherapy which includes active/passive mobility exercises, muscle stretching, muscle strengthening, weight bearing exercises, throwing a ball, moving, transferring, reaching and manipulating an object with detailed evaluation including ARAT score were taken as a baseline as well as postoperatively after the 4th week of treatment. Both the groups showed clinically and statistically significant improvement in total ARAT score at 4-weeks. The total ARAT scores had improved by 38.10 % in the experimental group and by 20.61 % in the control group. Results of the study concluded that there was a significant improvement in both the groups; however the Modified Constraint-Induced Movement Therapy group was more effective for improving involved upper extremity movement efficiency in patients of adult hemiplegia.