Children with mental retardation generally cannot be fully restored to normal, but they can be improved through a combination of rehabilitation training, sensory integration training, functional training and other treatments. 1. Rehabilitation training: Children with moderate mental retardation can undergo rehabilitation training, aiming at being able to take care of themselves and strengthening language training. The core of intelligence is the ability to think, and language is a tool for thinking. Therefore, in order to promote the development of intelligence, the cultivation and training of language must be emphasized. 2. Sensory integration training: It can be used to coordinate auditory, tactile, visual, vestibular and intrinsic senses through games, inhibit abnormal sensations, enhance body balance and coordination, etc., which will improve the therapeutic effect of rehabilitation. 3. Functional training: It can promote normal reflex movements and pathways, inhibit abnormal reflex pathways and movements, and restore the normal response of the brain to achieve good therapeutic effects. Children with mental retardation should go to the hospital in time in order to clarify the cause of the disease and be treated correctly under the advice of the doctor.