The invention relates to a cable laying ship, in particular to a submarine cable bundling type laying construction equipment system for offshore platform and aims to solve the problem of low submarine bundling speed due to adoption of a semi-mechanical way in the prior art. The system comprises a ship body, a central operation room, a plurality of cable reels, a cable guide rack, a cable laying machine and a water entering channel. The central operation room is arranged on the front portion of the ship body, the cable reels and the cable guide rack are arranged in the middle of the ship body, and the water entering channel is arranged at the rear end of the cable laying machine and used for water entering of cables to realize cable laying. A cable inlet carrier, a cable bundling device and a cable outlet carrier are arranged on the tail portion of the ship body, the cable inlet carrier is arranged between the cable guide rack and the cable bundling device, the cable bundling device is arranged between the cable inlet carrier and the cable outlet carrier, the cable outlet carrier is arranged between the cable bundling device and the cable laying machine, and a steering device for cable steering is arranged between the cable inlet carrier and the cable guide rack. By adoption of the technical scheme, automatic quick bundling of multiple cables can be realized in real time during submarine cable laying, and high operation efficiency and high speed are realized.