At present, the so-called under-intelligence is within 18 years of age, social adaptation, learning ability and expression ability and other aspects of ability below a certain degree of normal children, called mental retardation or developmental delay. In general, the combination of medical education is quite effective, according to the intelligence, memory problems or emotional problems, according to the different parts of the acupuncture or acupoint injection treatment. On the other hand, according to the specific situation of the child to strengthen the cognitive training, multi-sensory training, structured training, individualized training and other training, as well as according to the physiological situation and pathological parts, magnetic therapy techniques and auditory system corresponding to some treatment, physical factor treatment effect is good, so it is recommended that children with mental retardation should combine medical education, medical treatment to improve IQ, education to improve the ability, the current effect is still good.