Obviously, this is an issue of great concern to parents. It is fair to say that intelligence also has some genetic basis. We see that children of parents with higher IQ tend to be more intelligent and vice versa. Statistics show that if both parents are of normal intelligence, 73% of their children are of normal intelligence; if both parents are of low intelligence and one of normal intelligence, 64% of their children are of normal intelligence; if both parents are of low intelligence, only 28% of their children are of normal intelligence * if both parents are of low intelligence and one of defective intelligence, only 10% of their children are of normal intelligence; if both parents are of defective intelligence, only 4% of their children are of normal intelligence. The children of parents with both mental deficiencies have only 4% of normal intelligence. This shows that there is a close relationship between intelligence and genetics. However, if you think that “the dragon gives birth to the dragon, the phoenix gives birth to the wind” and that the child’s intelligence or stupidity is entirely given by the parents, then it would be biased. There is no shortage of examples around us, some parents are advanced knowledge, but their children can not even graduate from home school; while some parents are less educated, but the children got an advanced degree. This is because the hotbed of intelligence is the brain, and the growth and development of the brain is controlled by the regulation of both genetic and environmental countries. First of all, only those children who are born with better genetic clone quality are likely to obtain higher intelligence under the influence of the educational factors of the later cultivation. For those children who are born with poor quality, such as genetic defects and other problems, the implementation of the same educational tools will have little effect. By the same token, for those children who are very gifted, plus not timely education to create a good environment for their growth, then their innate superior conditions will disappear with the passage of time. In addition, the stimulation of certain harmful factors can also affect the brain development of the fetus, which in turn affects intelligence. For example, the pregnant woman suffers from certain diseases during pregnancy, exposure to radiation, as well as smoking, alcoholism, improper medication, poor nutrition, etc. It can be seen that genetic and environmental factors are closely related to each other and are indispensable for the intelligence of a child. We can neither exaggerate the role of heredity and ignore the environmental factors, nor can we ignore the influence of heredity and pursue environmental factors. Only when both are taken into account and complement each other, can “external factors work through internal factors”, so that the child’s intelligence potential to get the most full play.