Abstract:Toreniafournieri （Scrophulariaceae） is a suitable experimental plant for studies of angiosperm fertilization since it has semi-naked embryo sac within which egg cell, two synergids and part of the central cell are clearly visible under the light microscope, which facilitates the in situ observation of egg cell before and after fertilization. Progress in researches on fertilization mechanism of T. fournieri is reviewed in the following aspects： how the pollen tubes get into the embryo sac, dynamics of calcium in fertilization process, changes in the cytoskeleton of embryo sacs before and after fertilization. The significance of T. fournieri in the studies of in vitro fertilization is briefly described.