本文在基于大西洋飓风和西北太平洋台风的大量实测资料建立的轴对称、稳定状态台风模式的基础上对涡度转移所导致的台风的西向运动速度(本文称作β速度)进行了分析。量级概算说明对于尺度较大的台风这一β速度是不可忽视的。 文中并把它与台风内力的效果进行了比较。 Based on the axisymmetric and steady state typhoon mode established based on a large number of measured data of Atlantic hurricane and northwestern Pacific typhoon, the paper analyzes the westward movement velocity of typhoon caused by vorticity transfer (referred to as β velocity in this paper). The magnitude estimate shows that the β velocity for large-scale typhoons can not be ignored. The text compares it with the effect of typhoon internal force.