The wiring harness for the power supply of the server relates to the field of wiring harness processing and design, and is aimed at the problem of inconvenient and difficult to disassemble for the wiring harness clamp to fix the cable. The following solution is proposed, which includes a fixed block, and the right side of the fixed block is fixedly connected with a rotating shaft. The outer ring of the rotating shaft is rotated and sleeved with a sleeve. The inner wall of the right shell of the sleeve is fixedly connected with a bearing. The inner ring of the bearing is fixedly sleeved on the outer ring of the rotating shaft. A screw block is rotatably sleeved on the outer ring of one end of the rotating shaft close to the bearing. Both the top and the bottom of the screw block are fixedly connected with a limiting block, and the two limiting blocks respectively penetrate the top shell wall and the bottom shell wall of the sleeve. The utility model has a novel design, is convenient to fix servo wiring harnesses of different thicknesses, and can be adjusted according to servo wiring harnesses of different diameters. So that it is more convenient and faster to fix the servo wiring harness, and it can be fixed and disassembled quickly, which is suitable for market promotion.