Mental retardation training mainly includes cognitive training, perception training, self-care ability training, social behavior training and so on. 1. Cognitive training: people with intellectual disabilities have poor memory and attention, the first thing they should do is to carry out cognitive training, you can tell them the size, shape, function, color, etc. of each kind of objects, and need to gradually train the use of some commonly used objects in life. 2. Sensory training: Various kinds of objects can be used to stimulate the sense of touch and vision of the mentally retarded people, and they can also be taken out for activities to stimulate their senses, or play music to promote their auditory development. 3. Self-care training: Teach the mentally handicapped to dress, eat, wash and defecate on their own, and learn to organize their rooms and clean up after themselves as far as they are able to do so. 4. Social behavior training: teaching the mentally handicapped basic manners, teaching them to observe basic social behavior, and exercising their social skills. Mental retardation training should be repeated without interruption. It is recommended that it be done under the guidance of a professional doctor.