Ship manhole protection tool

The utility model provides a ship manhole protection tool which is arranged on the peripheral side of a manhole of a ship deck and comprises a base, a first supporting face, a second supporting face and a third supporting face. The base is fixedly connected with a ship deck and arranged on the peripheral side of the manhole in a surrounding mode, and the first supporting face, the second supporting face and the third supporting face are movably connected with the base and can support one another when forming a certain angle with the horizontal plane of the deck, so that a semi-sealed space wrapping the top face and part of the side face of the manhole is formed in the manhole. Therefore, top protection is provided for the manhole, and damage to personnel or equipment in the cabin due to the fact that objects falling from high altitudes or rainwater enter the manhole is avoided. Meanwhile, the first supporting face, the second supporting face and the third supporting face can be folded towards one side of the