Abstract: The spent fuel that encapsulated in the spent fuel storage canister shall be withdrawn in its reprocessing. Based on the circumstance of hot cell and the structure characteristics of spent fuel storage canister, as the radiation resistant design, the fixation of the storage canister, cutting feed, turning tool and its replacement, and rad-waste minimization shall be considered in the design. A dry circular mechanical cutting device is developed to open the spent fuel storage canister in the hot cell. Function tests verify that the cutting device meets the requirements of its design and application.