Objectives : The aim of this study was to investigate the concept of learning disability. Method : I surveyed some of medical and special education books about learning disability. Results and Conclusion : The following result were obtained 1. Learning Disability is a terminology having a special difficulty in acquirement or use of listening, speaking, reading, writing, reasoning and arithmetic. It generally has a various form. 2. Learning Disability is induced by congenital factor, postnatal brain damage, environmental malfunction, nutrition and biochemical elements. 3. Learning Disability is classified into developmental and schoolwork.