Objective: To observe the clinical efficacy of Shuangbai Powder external application for the patients with acute cholecystitis and the effect of the clinical efficacy with different technical parameter programs of external application,determining the best external application program of Shuangbai Powder. Methods: This research was a prospective clinical study on the 250 patients with acute cholecystitis which were analyzed by per- protocol population set( PPS). The patients were divided into the control gro...