The invention discloses an overhead line equipment information statistical method and device and system. The overhead line equipment information statistical method comprises the following steps: obtaining two-dimensional code identification information of overhead line equipment, wherein the overhead line equipment is provided with two-dimensional code identification, and the two-dimensional code identification carries the two-dimensional code identification information; judging whether the overhead line equipment is equipment to be transformed; if judging that the overhead line equipment is the equipment to be transformed, determining material information of the overhead line equipment according to the two-dimensional code identification information, wherein the two-dimensional code identification information is used for determining the material information of the overhead line equipment; and updating a to-be-transformed list according to the material information, wherein the to-be-transformed list is a material list of the equipment to be transformed. Through the overhead line equipment information statistical method and device and system, the problem of low efficiency of material information manual statistics of the equipment to be transformed in the prior art is solved.