Abstract: A process knowledge system for traditional Chinese medicine production includes a database module having production data acquisition and storage units. The production data acquisition unit acquires process parameter data in production. The parameter data includes quality and process data and is stored in the storage unit. A capability evaluation module evaluates the process capability of the system according to the quality data to obtain a process capability evaluation result. A monitoring feedback module enters a whole-process monitoring mode the process capability is found sufficient. A design space searching module enters a design space searching mode when the process capability is found insufficient.