The invention discloses a multi-degree-of-freedom-adjustable high-precision automatic assembly and docking system for ship sections, which relates to the technical field of shipbuilding and automatic assembly, and includes a trolley module, a ground track module, a sensor measurement module and a ship section module; the trolley module Installed in the track chute of the ground track module; the sensor measurement module is arranged on the periphery of the ship section module; the moving ship section in the ship section module is installed on the trolley module. By arranging multiple four-degree-of-freedom trolleys for coordinated movement and combining measurement equipment for data fusion, the present invention can efficiently and flexibly adjust the position and attitude of the ship section to be closed. The system is a closed-loop system with real-time feedback of measurement data, high precision of motion adjustment, high degree of automation, and no need for manual verification and verification, which improves the work efficiency and quality of ship assembly. The overall device layout is simplified, and the operational safety of the mechanism is improved.