The invention discloses a laying method and apparatus for high-rise bracket cables in tunnel. The apparatus comprises a cable tunnel, wherein cable down holes are formed in the cable tunnel at intervals; cable brackets are arranged on the inner walls of the two sides of the cable tunnel; different layers of the cable brackets are arranged from higher to lower at intervals; the cable brackets in each layer are also arranged at intervals; connecting plates are arranged between the cable brackets on the inner walls of the two sides of the upper layer in the cable tunnel; the connecting plates are provided with riding wheel fixing plates; riding wheels are arranged on the riding wheel fixing plates; and in addition, the heights of the connecting plates are gradually reduced from the cable down holes; and cables enter from the cable tunnel down holes and pass through the riding wheels to be subjected to traction by a winching machine. After the cables are on the proper positions through traction, an operator, who stands on a pedal with a certain height, can freely lift the cables to the cable brackets which are higher than the person, so that the labor intensity is greatly reduced; and meanwhile, the effect is more obvious when there are more co-path cables.