限制描述了对象间的一组复杂关系，现有ＯＯＰＬ中一般不支持它们的表示和计算．本文给出了一种限制的对象表示法，其思想是在引入限制的同时不引入额外的概念，保持对象模型和语言的简单性。本文还讨论了这种表示法引入的问题和解决方法．

Constraints reflect relationships among a group of objects or among p arts of an object. Current object oriented paradigm does not support the explicitly expressing and computing. This paper introduces a method to explicitly express constraints using objects. The purpose ofit is to keep the language model simple when introducing constraints.Problems are also discussed with possible solutions.