The invention discloses a marketing and distribution integration-oriented power distribution network topology construction method and a system, and the method comprises the steps: extracting data froma power distribution network professional and marketing professional system according to the types of topological elements of a power distribution network, and forming data elements corresponding toall data types; constructing a power distribution network topological structure based on the data elements corresponding to the data categories; wherein the element categories comprise a distributionnetwork basic element, an electrical basic element and an electrical realization element, unified description of marketing and distribution data is realized, a data description method for rapidly extracting graphs is provided, and effective data support is provided for marketing and distribution information integration.