本文在广泛的意义下导出了热带气旋瞬时移向所满足的一阶拟线性偏微分方程,并得到了一般解的表达式。同时也导出了相应的移速计算公式。然后,利用对解案的分析指出了热带气旋移动存在着突变现象。从而说明了热带气旋移动过程中某些“古怪”行为的发生。 In this paper, we derive the first-order quasilinear partial differential equations satisfied by the instantaneous migration of tropical cyclones in a broad sense and get the expression of general solution. At the same time also derived the corresponding calculation formula. Then, using the analysis of the solution to the problem, we point out that there is a sudden change in the tropical cyclone movement. This shows some “strange” behavior during the tropical cyclone movement.