首先介绍了多媒体同步的分类，并指出了实现多种媒体同步的关键就在于建立适当的同步控制模型；接着分析了现在流行的３ 种单一同步模型以及二级同步模型，评价了它们各自的优点与缺陷． 在此基础上，提出了一种改进的参考点同步模型多媒体同步输出控制方法，这种折衷的同步控制方法，在一定程度上弥补了单一同步模型和二级同步模型各自的缺陷． Firstly, the classification of multimedia synchronization is introduced. The key point to realize the synchronization of multiple media is to set up an appropriate synchronization control model. Then the three popular single synchronization models and the two synchronization models are analyzed and their respective advantages are evaluated And defects. On this basis, an improved control method of multimedia synchronous output of reference synchronous model is put forward. This compromise synchronous control method makes up for the defects of single synchronous model and secondary synchronous model to a certain extent.