The level of clinical research depends on good or bad program design. The design of the research is an important part to protect the level and quality of clinical research. Randomized, controlled efficacy studies must be specifically requested, a clear definition of the characteristics of the target population, the clear efficacy indicators such matters so on. It must also set the same period in parallel to the control to exclude non original prime, and set off to deal with the true effect of the elements. This is both an important principle of clinical research,and basic scientific research requirements as well.