GIS based optical cable same-route analysis method and device

The invention discloses a GIS based optical cable same-route analysis method and device; the method comprises the following steps: setting up a laying segment on a line segment in an optical cable laying field sketch map displayed by a GIS map, and simulating and laying the to-be-laid optical cable on the laying segment; setting up a corresponding incidence relation between the optical cable and the laying segment according to a topology relation of the GIS map; carrying out optical cable same-route analysis according to the corresponding incidence relation. The method and device lead the GIS map into optical cable same-route analysis, calculation through a sketch map mode is omitted, and a relation between the optical cable and the laying segment is set up through a GIS map topology mode, thus realizing optical cable same-route analysis between the optical cable and the laying segment and the optical cable same-route analysis of bearing business, thereby improving same-route analysis result accuracy and analysis efficiency, and bringing conveniences for optical cable same-route analysis of a user.