The original meaning of promoting eruption is make incomplete erupt measles uniform distribute.Later,it was mostly used in the treatment of other rash diseases.This paper analyzes the definition,principle and medication characteristics of promoting eruption,thought that the promoting eruption is meant to promoting evil factors go away from the human body.Whether macula exposure depends on its disease characteristics,the appearance of macules is a symbol of its internal changes,rather than pathogenic factor ways to leave.In clinical application,Firstly,the type of disease should be identified,It is concluded that the promoting eruption method is applicable to many inflammatory erythema caused by warm and heat evil gas stagnation,but is not applicable to bleeding diseases.Secondly,find out the state of the disease,In accordance with Yetianshi's"Sweating method can be used in weifen syndrome,clearing heat should be used only when qi level is invaded,Heat would be Transferred to qi when it Enters Ying,when in xuefen syndrome,just only cooling blood and dispersing blood."principle.When evil factors in wei/qi/ying syndrome,we still promoting it go away by use the"fangxiangtouluo/xinliangjieji/induce ying heat into qi phases"methods,but when heat into xuefen,it can no longer be promoted.