Component maintenance and transfer system and transfer method for container ship cargo hold

The invention relates to a component maintenance transfer system and method for a container ship cargo hold, and the system comprises a first cargo hold platform opening, and a turnover platform is arranged on the first cargo hold platform opening and is of a hinge turnover plate type; the first protective handrail is arranged on the front edge of the turning plate platform, and the number of the handrails is two; the second cargo hold platform opening is formed in the area, close to the ship, of each cargo hold platform; the grating cover is arranged on the opening of the second cargo hold platform; the second protection handrails are arranged on four sides of the second cargo platform opening; the small hatch cover special for the hanging opening is arranged on the hatch coaming top; the first hoisting device is arranged right above the opening of the second cargo hold platform and the small hatch cover special for the hoisting opening; the second lifting device is arranged above a cargo compartment fan mot