临床诊断治疗过程实际上是一个医疗信息采集、传递、存贮、处理、表示的过程．如何表达医疗信息的数量特征，如何揭示临床医疗活动过程信息流本质，是进一步开发计算机临床信息系统的关键性问题．本文借鉴申农信息论中信息熵理论，探讨测定医疗信息熵的基本原理和方法，提出医疗信息熵中各值的实际意义，阐述测定的基本原则 Clinical diagnosis and treatment process is actually a medical information collection, transfer, storage, processing, said the process. How to express the quantitative characteristics of medical information and how to reveal the essence of information flow in the process of clinical medical activities are the key issues to further develop computer clinical information system. This article draws on the information entropy theory of Shennong Information Theory, explores the basic principles and methods of measuring medical information entropy, puts forward the practical significance of each value of medical information entropy, expounds the basic principles of measurement