The prescription is an important means of in TCM clinical treatment. Through the collection and summarization by the ancient physicians prescription number is growing. Everything is constantly and dynamicly changing, so is the change of prescription. Through a census, screening, merging, mining, discriminating, To filter out from the multitude of ancient and modern prescription the prescriptions which are easy tomemorize, and also can meet the clinical needs. From the former addition to an reasonable subtraction, Combining with clinical and experimental research to make innovation is an important objective of clinical Chinese medicine prescription screening.