摘要
According to paleontological phylogenetical data and related biological data, this paper discasses that biota itself is the material basis of its evolution,the mutations plays a leading role and the phyletic evolution plays the secondary role. The evolution pattern of the punctuated equilibria is universally shown in phelogeny. There is a similar ideal form-making instinct in different great phyla and the synchronous orientation parallelism in different lineages of a same tribe. No innate attributes are restricted by the geographical isolation. The extinction is an innate attribute of biota. The conclusion is that the biota itself plays a leading role in phelogeny and the environment action is secondary.