线圈炮在宇航与国防中有重要应用前景。本文先简述其分析模型与方程。方程为非线性变系数常微分方程的初值问题，有时呈刚性。用Ｔｒｅａｎｏｒ方法求解，所得结果与国外已有装置的试验数据符合良好。并对一个小炮做了初步的原理设计。 Coil gun in space and defense have important application prospects. This article briefly describes its analytical models and equations. The equation is an initial value problem for a nonlinear variable coefficient ordinary differential equation, sometimes rigid. Using the Treanor method, the results obtained are in good agreement with the experimental data of the existing installations in foreign countries. And made a preliminary design of a small gun theory.