Abstract: In the essay,the authors set up a evaluation index system for security of working face from roof pressure centralizing level.bracket working estate and working face management leval on the basic of laboring various factors which effecting the safety of working face.The authors divede the level of working face safety into four grades,as follows:First grade(good),Seconnd grade(common),Third grade (inferior),Fourth grade(worst).The authors set up its layer fuzzy and synthetic evaluation method.Using this method,the authors evaluate the Xin Yuan mine12101 working face of Zao Zhuang mine group and analyze the primary factors of effecting the security of working face.At last,the authors put forward some ideas of promoting safety production.