The invention provides a power transmission path grouping recovery method and device, and relates to the technical field of power systems, the method comprises the following steps: obtaining the limitcharging distance of each voltage level line between a power transmission starting position and a to-be-recovered position; Establishing a front K power transmission path optimization model accordingto a network flow theory; Establishing a line grouping commissioning model of the power transmission path according to each limit charging distance; according to the line grouping operation model, determining a grouping line used for power transmission between the power transmission starting position and the to-be-recovered position; And according to the front K power transmission path optimization model and the grouping line, determining a grouping recovery path between the power transmission starting position and the to-be-recovered position. According to the invention, the rapidity and safety of power transmission path recovery can be effectively improved.