Nanjing Teachers College of Special Education should learn sign language for rehabilitation treatment. As a special education normal college, Nanjing Special Education Normal College mainly focuses on the knowledge and skills in the field of special education. In rehabilitation treatment, students usually need to learn some communication skills related to children with special needs, including sign language. Sign language is a way of communication through gestures, fingers and facial expressions, especially for people with hearing or speech difficulties. For the students in teachers' college of special education, learning sign language can enable them to communicate effectively with students with hearing or speech impairment.