The invention discloses a distribution network model topology connectivity verification method. The method comprises two aspects, the first including extracting a single line model through a distribution network feeder hierarchical relation, then clustering based on the connectivity of nodes, generating various connected clustering islands, and then determining the distance among the islands so as to preliminarily determine the connectivity of the single line model; and the second including extracting a single line model through a topological relation, then performing generalized dotted line graphic layout, generating a visualized distribution network topological graph, assisting in determining the model connectivity, or readjusting model extraction conditions, performing model re-extraction and re-layout, and conducting comparative analysis of the single line model connectivity. Based on the objective situation in the application of a distribution network model, the method is used for comparative analysis of the topological boundary and internal connectivity of the single feeder model from the two aspects of the hierarchical and topological relations, and provides calibration means for related applications based on the correctness of a topological model.