Beca use of the great needs for both the rcsoarch of pansystems mathematics and the analysis of general things' mechanism,this paper discusses the binary relations transitivity confincd to multirelation.The so-called "g-transitivity"-a completoly new concept about transitivity-is introduced and its basic properties are investigated.The study sfiows that it is not only g-transitivity a generalization of traditional transitivity,quasi-transitivity,semorder,quasi-order and other panorder,but also includes many basic concepts such as closeness,convexity,topology,duality as its special cases.