Gauss was a famous German mathematician, physicist, astronomer and geodesist. When Gauss was 9 years old, the method used to sum the natural numbers 1 to 100 was to sum the sequence of 50 pairs constructed as and 101 as (1+100, 2+99, 3+98...). At the same time, the result is 5050; When Gauss was 18 years old, he discovered the prime distribution theorem and the least square method. When Gauss was 19 years old, he constructed the regular 17-sided shape using only a ruler and a compass without a scale (Archimedes and Newton did not draw it). Gauss's achievements cover all fields of mathematics, and he has made pioneering contributions to number theory, non-Euclidean geometry, differential geometry, hypergeometric series, complex variable function theory and elliptic function theory. He attached great importance to the application of mathematics, and in his studies of astronomy, geodesy, and magnetism, he also emphasized mathematical methods.