In the pant a few years,the rate of court mediation has dropped down in our country.A lot of courts try their best to change this situation,which makes the role of mediator attracts people s attention.There exist two kinds of Mediator s style;one can be called the "facilitator",and the other "evaluator".As aresult,They pursuit different goals,which lead to their different forms.However,the determine factor of the mediator role choice is the case category,to which should be paid more attention.