C.F.Gauss (1777- 1855) is known as the prince of mathematics. /kloc-at the age of 0/4, one of the greatest mathematicians in human history discovered Gaussian series. 15 years old began to seek non-Euclidean geometry and finally found out how intrinsic geometry was extended to higher dimensions by his disciple Riemann, who discovered the famous Riemann geometry at the age of 18 years old. The famous least square method, 19 years old, solved the problem of ruler drawing of regular polygons that has not been solved for more than 2000 years, and extended it to completely solve the problem of ruler drawing of regular polygons. This year, he began to write his famous diary until he was 27 years old, and made 144 important discoveries, including the double-period nature of elliptic functions (he was less than 20 years old at that time). And so on. At the age of 24, he completed the landmark masterpiece Arithmetic Research and officially started the creation of number theory. Among them, he proved the reciprocity rate in six ways, developed the quadratic theory, put forward the concept of congruence, and created the rigor of analytic number theory. If Gauss Abel and Jacoby could read diaries, they wouldn't have to spend their youngest years on the results discovered by Gauss, but mathematics would at least make progress in one world. The discoverers of non-Euclidean geometry can also make greater contributions. Gauss's work involves number theory algebra (gauss elimination), complex variable function theory, non-Euclidean geometry hypergeometric series elliptic function astronomy geodesy electromagnetism potential theory surface theory probability statistics and so on.