The invention discloses a GIS-based power distribution network planning evaluation method, device and system, and the method comprises the steps: receiving planning power distribution network projectdata imported by an upper-level department client, and issuing the planning power distribution network project data to a lower-level department client; receiving demand data for filling and submittingthe project by the lower-level department client according to the planning power distribution network project data to carry out intelligent examination; collecting, storing and receiving the projectpre-review suggestions filled and submitted by the lower-level department client, summarizing and exporting the project pre-review suggestions online, and sending the summarized project pre-review suggestions to the corresponding upper-level department client; carrying out geographic position positioning on a power distribution network project by adopting a GIS; and sending the visual GIS positioning data and the related information of the power distribution network project to a corresponding superior department client, receiving review suggestions and project scores of the project filled by the upper-level department client according to the preview suggestions, carrying out statistics to obtain a review result of the power distribution network project, and feeding the review result back to a corresponding lower-level department client.