During the treatment of intellectual disability, in addition to timely treatment, the patient’s diet and psychological state are also very important. Parents should discover and intervene in the situation of intellectual disability as early as possible, allowing the child to develop normally. First, parents should take their child to the hospital for a detailed examination and diagnosis to determine if there is an intellectual disability and to find out the causes related to brain diseases. Then, according to the specific situation, treat the symptoms appropriately to stabilize the condition of the child. In addition, patients should also pay attention to diet and mental health, avoid excessive stress and anxiety, and not have an unnecessary impact on the recovery from intellectual disability.