A child’s IQ may be 50-60% from genetics, but there is no clear research data on the percentage of a boy’s IQ specifically inherited from his parents. Boys’ IQ is mainly influenced by genetic factors and acquired factors, and acquired factors also have a great influence on boys’ IQ, even more than genetic factors. Although the proportion of boys’ IQ inherited from their parents is uncertain, boys’ IQ is related to brain activity. The more active the brain, the higher the IQ of the boy. And how active a boy’s brain is is related to acquired brain development. Therefore, parents should pay more attention to the influence of acquired factors on boys’ IQ compared to genetic factors. Parents can help boys’ IQ development by exercising their logical analyzing ability and spatial imagining ability through games, as well as letting them read more books and receive a perfect education. Genetic factors and acquired factors together determine the level of a boy’s IQ. Therefore, it is recommended that parents should also pay attention to the boy’s acquired training, create a good family environment, and in the process of the boy’s growth and development, it can be appropriate to supplement foods rich in lecithin, linolenic acid and other nutrients, such as eggs, salmon, walnuts and so on.