That Infectious refractory wound healing is a very difficult matter in surgical department, which include anal fistula in anorectal surgery. The method of removing slough, promoting growth of tissue eregeneration is one of the big methods in surgical treatment of traditional Chinese medieine, It has been widely used to promote wound healing, and its'clinical effect is significant. Chinese Traditional medicine thought that The new fresh meat wouldn't grow if the slough does not be eliminated, Bace on this th...