针对用解析法求解二次曲面相贯线过程中会出现四次方程，给求解带来困难的问题，介绍了一种求二次曲面相贯线的简洁解析算法，并在计算机上得到了实现。 Aiming at the problem of solving the quadratic equations in the process of intersecting lines of quadric surfaces with analytic method, this paper presents a simple analytic algorithm for finding the intersecting lines of quadric surfaces, which is implemented on a computer .