A cable fixing mechanism and a cable mounting system

The invention provides a cable fixing mechanism and a cable mounting system, belonging to the technical field of cable mounting. The cable fixing mechanism comprises a street code, a plurality of fixed insulators and a plurality of insulation packing blocks, wherein the street code has a support plate, a pillar and a plurality of support blocks; A plurality of support blocks are arranged on the support plate vertically and spaced apart in sequence, and mounting through holes are arranged on the free ends of the support blocks; A plurality of fixed insulators are respectively installed on the support blocks, the fixed insulators are provided with fixed through holes, and the struts are sequentially passed through the plurality of mounting through holes, and the fixed through holes are installed on the street codes. At least one side surface of the fix insulator is provided with a first groove, and the insulate pressing block is provided with a second groove which is arranged in cooperation with the first groov