Analytic geometry includes two parts: plane analytic geometry and solid analytic geometry. Plane analytic geometry establishes the one-to-one correspondence between points and real number pairs, and the one-to-one correspondence between curves and equations through plane rectangular coordinate system, and studies geometric problems by algebraic method or geometric method. /kloc-since the 0/7th century, due to the development of navigation, astronomy, mechanics, military affairs and production, as well as the rapid development of elementary geometry and elementary algebra, analytical geometry has been established and widely used in various branches of mathematics. Before analytic geometry was founded, geometry and algebra were two independent branches. The establishment of analytic geometry has truly realized the combination of geometric method and algebraic method for the first time, and unified shape and number, which is a major breakthrough in the history of mathematical development. Descartes is the first decisive step in the development of variable mathematics, and the establishment of analytic geometry has played an inestimable role in the birth of calculus.