The utility model belongs to the technical field of engineering measuring instrument technique and specifically relates to a transmission line iron tower basis positioner. The overhead line iron tower basis seat of transmitting power is at present fixed a position, uses equipment completions such as theodolite usually, and the operation is complicated, and work efficiency is lower. The utility model discloses technical scheme includes frame, base, stabilizer blade, spirit level, plain noodles projection unit, the frame lower part rotate can the assembly on the base, the base is equipped with the spirit level, the stabilizer blade is equipped with to the base lower part, be equipped with horizontal reference plain noodles transmitter, a set of circuit position plain noodles transmitter, four group's basis position plain noodles transmitters in the frame, through five perpendicular fan -shaped plain noodles and horizontal light face bonding, realize the operations such as unwrapping wire, location and lining of iron tower basis seat. The utility model has the characteristics of it is rational in infrastructure, small in size, easy operation, convenient to use etc, greatly reduced the construction degree of difficulty, improved work efficiency.