Hoisting tool for guide frame of upper pipe seat of fuel assembly and use method of hoisting tool

The invention provides a hoisting tool for a guide frame of an upper pipe seat of a fuel assembly and a using method of the hoisting tool. The hoisting tool comprises a connecting buckle disengaging device and a driving core rod. A first opening is formed in the middle of the connecting buckle disengaging device, and the connecting buckle disengaging device is matched with a reinforcing plate above the upper tube base guide frame. And the driving core rod is fixedly connected with the connecting buckle releasing device through the open hole. The lifting equipment drives the driving core rod to rotate so that the connecting buckle disengaging device can be disengaged from or connected with a reinforcing plate above the upper pipe base guide frame. According to the hoisting tool, the driving core rod and the connecting buckle disengaging device matched with the upper tube base guide frame are arranged in the hoisting tool, so that the functions of stable hoisting mechanical operation and remote rapid connecting