Adults with mental retardation generally have a hard time curing themselves and may experience some relief from their symptoms with aggressive treatment. Mental retardation in adults may be related to brain injury, hereditary diseases, infections, poisoning and other factors. Patients may have poor language expression, slow reaction, poor memory, low thinking ability, abnormal expression and other manifestations. In general, after early detection of the cause and appropriate intervention, intelligence may improve, but it is difficult to completely self-healing. It is suggested that patients should eat foods high in protein, calories and vitamins, strengthen motor training, improve self-care ability, and arrange appropriate group activities, which are conducive to the improvement of intelligence. Adults with mental retardation should seek timely medical treatment under the guidance of a doctor.