Abstract: In our country, the mediation in administrative litigation is prohibited clearly, but it is actually on the rise in the judicial practice. Beginning with the investigation of the mediation's tripartite main body, the causations of mediation's vigorous growth rest with：a mass of administrative discretions provide feasible foundation for it; judicial activism supplies the validity foundation for it; the awakening of administrative counterpart's self-consciousness furnishes it with indispensable foundation.