Hoisting hole protection device

The utility model discloses a hoisting hole protection device, which relates to the technical field of hoisting, and comprises two cover plates, two first connecting structures and two second connecting structures, the two cover plates are rotatably arranged on two opposite sides of the top end of a hoisting hole; the two cover plates can be overturned downwards to be in a first state of closing the hoisting hole and can be overturned upwards to be in a second state of opening the hoisting hole, the two first connecting structures are arranged on the two sides of one cover plate correspondingly, and the two second connecting structures are arranged on the two sides of the other cover plate correspondingly; and when the two cover plates are in the second state, the first connecting structures and the second connecting structures on the same sides of the two cover plates are detachably connected to form a guardrail. According to the hoisting hole protection device, when the hoisting hole is not used, workers or