Gauss (1777— 1855) is a German mathematician, physicist and astronomer. Gauss showed extraordinary mathematical genius in his childhood. At the age of three, he studied arithmetic, and at the age of eight, he discovered the summation formula of arithmetic sequence, which won the admiration of teachers and classmates. In his sophomore year, he drew a regular drawing of a regular heptagon. The condition that a regular polygon can be drawn with a ruler is given. The unsolved problems for two thousand years have been solved. 1799 received his doctorate with four beautiful proofs of the basic theorem of algebra. Gauss's achievements in mathematics are all over various fields, and his contributions in many aspects of mathematics are of epoch-making significance. Moreover, in astronomy, geodesy and magnetism have made outstanding contributions. Arithmetic Research, published in 180 1, is one of the few classic works in the history of mathematics, which opened up a new era of number theory research. Non-Euclidean geometry is another important discovery of Gauss, and his legacy shows that he is one of the founders of non-Euclidean geometry. Gauss devoted himself to astronomical research for about 20 years. One of the masterpieces in this field is the Theory of Celestial Motion published by 1809. Gauss also made outstanding contributions to physics. Maxwell said that Gauss's magnetic research changed the whole science. Gauss also trained many outstanding mathematicians in his life.