In order to effectively recording process recipe and process parameters, using WinCC user archiving technology to control the extraction process of Chinese medicine. Users archive component by the user archive editor, WinCC user controls and user archiving form the composition of the script function. Application user archiving basic steps include: configuration and set up a data recording interface. Finally, gives the realization of specific methods and examples. Database operations with common methods of comparison show that the technology used in advanced process control.