The application discloses a power inspection robot fixed-point positioning system. The system comprises a control terminal, an inspection robot and a plurality of power cabinets, wherein the control terminal sends an inspection instruction to an inspection robot and/or sends a response instruction to each power cabinet according to a manipulator instruction; the inspection robot receives the inspection instruction and sends a position inquiry instruction to each power cabinet according to the inspection instruction; and each power cabinet receives the response instruction and/or the position inquiry instruction and sends position information to the inspection robot according to the response instruction and the position inquiry instruction for the inspection robot to move to the power cabinet according to the position information. The power inspection robot fixed-point positioning system disclosed by the application solves a problem that in the prior art, the inspection robot can only travel along a rail, resulting in limitation to an inspection range.