与其他言语合成技术相比较，规则合成有两个明显的优点：语音库占用的内存很小和可以灵活控制合成言语的声学特征和韵律特征。本文介绍第一作者在１９８６—１９９０年期间在英国伦敦大学所开发的汉语按规则合成系统，和１９９２年在中国科学院合作期间所作的改进。包括汉语按规则合成的原理和策略，特别是韵律控制的方法，以及对系统的评价。 Compared with other speech synthesis technology, there are two obvious advantages of rule synthesis: the speech bank occupies a small memory and can flexibly control the acoustic and prosodic features of synthesized speech. This article presents the first author’s Chinese rule-by-rule synthesis system developed at the University of London in the UK during 1986-1990 and the improvements made during the cooperation with the Chinese Academy of Sciences in 1992. Including Chinese rules and strategies based on the principle of synthesis, especially rhythm control methods, as well as the evaluation of the system.