Abstract: The group-together method of shear-wall nodes in the CAD system of tall building structure is studied．Method of generation and data structure of shear-wall nodes is presented．The dot-matrix-indication method and the vector-indication method for group-together of shear-wall nodes are also developed．The method proposed in this paper is accurate and powerful，and makes it possible to realize the group-together of shear-wall nodes in the three-dimensional complex shaped tall building structure．