Network　planning　is　a　complicated　and　arduous　project,　with　a　large　scale　of　uncertain　factors　and　a　wide　range　of　characteristics.　Based　on　the　technical　characteristics　of　the　power　grid,　a　scientific　and　comprehensive　index　system　is　established　in　this　paper.　Using　the　judgment　matrix　and　intrinsic　entropy　value　to　determine　the　index　weight　of　each　level,　the　fuzzy　analytic　hierarchy　process　is　proposed　to　evaluate　the　power　grid.　For　the　selection　of　the　planning　project,　the　weakness　oriented　dynamic　assessment　method　is　proposed,　forming　a　closed　loop　evaluation　strategy.　In　the　view　of　the　weakness　of　the　power　grid,　the　key　indexes　are　selected　to　evaluate　the　power　grid　planning　projects.　The　validity　of　the　method　is　verified　in　the　case　of　a　regional　power　grid.