The utility model discloses an indoor strong current cable installation bridge, which comprises an installation plate, a plurality of groups of installation frames, an adjusting piece and a cable support, the installation plate is of a U-shaped structure, the plurality of groups of installation frames are arranged in the installation plate at equal intervals, each group of installation frames comprises two bridge frames, and the adjusting piece is arranged in the bridge frame. And the two bridge frames are fixedly mounted on the inner walls of the two sides of the mounting plate correspondingly. According to the utility model, the opposite surfaces of the upper support and the lower support are provided with the plurality of mounting grooves at equal intervals, the two sides of the mounting grooves are provided with the vertical frames, the springs are fixed in the vertical frames, the elastic force of the springs can enhance the abutting effect of the top blocks in the clamping frames on the cables, the stability of cable fixation is improved, and the cables are prevented from loosening; and one vertical block in the same mounting groove is fixedly connected with the spring and fixes the clamping frame together with the other vertical block in the same mounting groove, and the elastic force of the spring is transmitted to the clamping frame, so that the cable is clamped, and the fixing function of the cable can be effectively realized.