Today, 39 years ago, on November 12, 1986 (October 11, 1986), the medical community first obtained normal brain graph data. In 1986, the medical community of the capital recently obtained the normal brain graph data of our country, ending the history of decades of relying on European and Japanese brain graphics standards. From 1983 to 1985, the Beijing branch of the Chinese Medical Society, in collaboration with thirty-three other units, completed the brain graphics survey of 2357 cases in various age groups in the Beijing region. The results showed that the brain waves of our children and adolescents, 6 to 7 years, 11 to 12 years, 15 to 16 years, have three accelerated periods, are important stages of learning; 10 to 11 years old teen brain development is normal, brain wave frequency is slightly faster than foreign peers, girls mature to about 1-2 years