The invention provides a manufacturing assisting tool for down conductors. The manufacturing assisting tool comprises a base. A jack is horizontally installed at one end of the base, and a bending pressing mold is installed at the other end of the base. A flat-shaped punching pressing mold is installed at the head of the jack, and a disc type rocker arm capable of driving the punching pressing mold to stretch out is further arranged on the jack. The bending pressing mold is arranged in front of the punching pressing mold and comprises two rectangular pressing plates which are symmetrically arranged in the axial direction of the punching pressing mold, and an included angle is formed between the ends, far away from the punching pressing mold, of the two pressing plates and is larger than or equal to 30 degrees. A tool handle is further horizontally installed outside the end, provided with the jack, of the base. By means of the manufacturing assisting tool, the manufacturing quality of the down conductors can be guaranteed, and meanwhile the wider bendable angle range can be provided; the manufacturing assisting tool has the advantages that the manufacturing assisting tool is light in weight, convenient to carry and easy to operate, time and labor are saved, and damage to galvanizing coatings on the surfaces of grounded round steel can be reduced to the maximum degree.