Placebo-controlled clinical trials have been more and more emphasized in traditional Chinese medicine(TCM)researches,while the preparation of TCM placebos is still to be improved.For this work,some elements should be taken into consideration comprehensively,including the design of clinical trial,the characteristics of researched disease,the nature of testing drugs,and the way of medication,etc.And the technological process for placebo manufacturing should be selected properly depending upon the basis of the...