The specimens from the Hule area of Ningguo County, Anhui Province and the data of all known 25 species and subspecies in the world shows that Anisograptus has apparent morphologic differentiation in the length of primary stipes, the spacing of dichotomies and the density of thecae. Therefore, this paper selects these three morphologic characteristics as the principle for the taxonomy of Anisograptus. Accordingly, Anisograptus is here divided into 5 species, i.e. A. matanensis Ruedemann, A. ruedemanni Bulman, A. tetragraptoides Bulman, A. compactus Cooper, and A. delicatulus Cooper.