1A prototype knowledge-based system for recipe transformation and management in batch chemical processes is presented in this paper. The system, named as recipe management system (RMS), consists of a knowledge base, a data base, and an user interface. The basic architecture of the RMS is described and two important issues, knowledge representation and natural language processing, are discussed. The aim of the system is to provide the process engineer a tool to simplify the recipe transformation process and to help the control engineer to control the recipe management activity. Object-oriented programming technique and key word analysis technique are employed in the RMS.