The invention provides a planned project execution effect micro-application method for a power distribution network. The working quality of power distribution network planning construction and operation and maintenance management is improved. A complete power grid construction project post-evaluation index system is built by utilizing a big data technology in combination with the project state information of the planning platform, and the power grid construction project is objectively, comprehensively and reasonably evaluated by combining a plurality of post-evaluation methods. The execution accuracy and completion degree of the power distribution network planned project is analyzed. The problems of the power grid construction project in the steps of planning, early stage, construction, production operation and the like can be found and solved in time.