Abstract: Musci include three Subclasses (Brotherus, 1924 ~ 1925): Sphagnidae, Andreaeidae and Bryidae, which are composed of about 100 families and 800 genera in the world. Our researches indicated that the types of spore dispersal has an important significance in the evolution of mosses. Based on the stud-ies of sporophyte, peristome teeth and the individual development of mosses, 5 types of spore dispersal can be inducted, that is decay dispersal, wind dispersal, vapour - wind dispersal, water dispersal and insect dispersal. Furthermore, the relationship between the spore dispersal and evolution is discussed in detail.

Key words: Mosses