Mild intellectual disability generally does not accompany mental illness. The main manifestations of children with this condition are that they have relatively good language development, but their comprehension ability is still relatively poor. They can only reflect the superficial phenomena of things. They have difficulties in calculation and it's hard for them to reach the level of graduating from primary school. Although they have relatively rich emotions and certain interests, their initiative and enthusiasm are relatively poor. Most of these children can engage in relatively simple labor under the care of others. They are easily irritated when encountering adverse stimuli.