The new generation of process parameters measuring technology--Process Tomography(PT) has come into the stage of industrial applications. In this paper,the differences between Process Tomography(PT) and Computerized Tomography(CT),the feature and structure of PT, and the present state-of-art of PT is introduced. The prospest of PT applied to process monitoring and control and the challenge problems are also discussed.%过程层析成像(Process Tomography，简称PT)技术经过十多年的发展已逐步走向成熟，从实验室研究进入到工业应用研究阶段。本文将简要介绍PT技术与医学成像(CT)技术的区别、及其特点和组成；PT技术的研究和发展现状；应用于工业过程的监测与控制的前景和所需要解决的问题。
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