In this paper, the process transparency of COM is introduced and the features of three models are specified.At last, the process of realization of the three models are shown by ATL.

• 介绍了组件对象模型的“进程透明性”,详细说明了三种形式:进程内组件、进程外组件和分布式组件的进程特点及实现“透明性”的机理。