Cabin-entering hoisting method for ship main thruster

The embodiment of the invention provides a cabin-entering hoisting method for a ship main propeller, which comprises the following steps: hoisting a main propulsion base of the ship main propeller, fixing a hoisting eye plate and a paddle of a propeller of the ship main propeller, transporting a steering oar module to a first preset position below the main propulsion base, overturning the steering oar module, and hoisting the main propulsion base and the paddle of the propeller of the ship main propeller; the method comprises the following steps: hoisting a steering oar module in place, installing a connecting bolt, cleaning a hoisting hole flange surface and a sealing cover plate flange surface of a main propeller base, installing a sealing cover plate, carrying out pressure test on the sealing cover plate, and plugging a pressure test threaded hole by using a screw plug after the pressure test is completed and no leakage exists. According to the technical scheme, the installation precision of the propeller