The child’s IQ needs to go to the Children’s Health Unit of the hospital, through the IQ test related items to comprehensively evaluate and analyze, and then arrive at the corresponding test results. The evaluation tools and evaluation scales for the IQ test vary according to the age of the child, and the test needs to be conducted in a relatively independent and quiet place to avoid being disturbed or affected by the test process. The child should try to cooperate with the physician’s requirements to complete each evaluation item in order to obtain relatively accurate results. If the test results are obviously abnormal, it is necessary to complete the relevant auxiliary examinations under the guidance of the physician, to clarify the specific causes, and to give the appropriate interventions for the causes, so as to avoid delaying the best time for treatment.