The study aims to synthesise critically and summarise the best available evidence of the effects of rehabilitation on intellectually-disabled people. Findings demonstrated positive rehabilitation effects on intellectually-disabled people. This study contributes to the comprehensive nursing care of intellectually-disabled people by endorsement of the effectiveness of rehabilitation in terms of ADL, self-care skills, communication skills and cognitive achievements. The collected evidence of this study may contribute to the education of more effective nurse practitioners involved in the daily care and rehabilitation of intellectually-disabled people.