Objective:To study the features of Liu Wansu in prescription.Method:combining the tradition-al documents with prescription metrology

selecting some doctors before or after Liu Wansu as comparison（contrast） to expose the features of Liu Wansu in prescription.Result:The features of Liu Wansu in prescription is:the index of applying ‘clearing heat’method is higher than his previous and contemporary doctors（T = 3）

ph/pw 1.22;three compatibility indicators are all comparatively high

especially G is higher than others（P < 0.01）

DZis lower（P < 0.01） compared with Liu

there is no difference in the frequency of Han and Re drug

three indexes of compatibil-ity and five indexes of dose by Zhang Zihe;The fh frequency of Wu Jutong is higher than Liu（P < 0.05）

and same in Tij（Tij = 3）.Conclusion:Liu Wansu’s ‘Theory of Fire and Hot’is the fruit of development of shang-han theory

has further innovation and development.He attached importance to Hanliang

more emphasis syndrome.