The invention provides a transmission line urgent repair tower body which is formed by connecting modularized tower body sections end to end. Each tower body section is formed by splicing corner posts. The transmission line urgent repair tower body is characterized in that each corner post comprises two side boards, wherein an included angle is formed by the two side boards with a post body serving as an axis, bolt holes perpendicular to the post body are formed in the edge of one side board at intervals, and the bolt holes are used for connection between the corner posts. Compared with the prior art, the transmission line urgent repair tower body has the advantages that light weight and modularization are guaranteed, meanwhile the geometric dimension of an urgent repair tower is remarkably increased, the carrying capacity of the urgent repair tower is remarkably improved, the application range is obviously increased, and an effective way is provided for urgent repair of large-load and large-size structures with ultrahigh voltage and the like.