Abstract: Because the location of moving objects is frequently updated in moving objects databases，it is the issue to be solved how to manage the updating of the moving objects trajectory （location） in moving objects databases.This paper proposes the general updating system of the moving objects trajectory which solves the issues in the updating policies of the moving objects trajectory.The trajectory of moving objects is firstly defined，and then the updating policies of the moving objects trajectory are induced to two kinds：point & vector，which is on the basis of modeling the trajectory of moving objects in this paper.This paper also describes the updating principle & algorithm of the trajectory of moving objects，and compared two kinds of updating policies in the simulated experiment.

摘要： 在移动对象数据库中存在着移动对象位置的频繁更新，因而，如何管理移动对象轨迹（位置）的更新将成为移动对象数据库要解决的问题。对移动对象轨迹更新策略中存在的问题，提出了一个统一的移动对象轨迹更新体系。首先定义了移动对象的轨迹，从移动对象轨迹建模的角度，将移动对象轨迹的更新策略归纳为基于点与矢量的移动对象轨迹更新策略，给出了移动对象轨迹的更新原理及算法，并进行了两种更新策略的模拟实验比较。