To provide a vessel group conveyance device and its method usable in a depalletizer unloading a group of vessels from above a pallet and a palletizer piling up a group of vessels on the pallet for preventing drop of vessel during conveyance of the group of vessels and deformation of the vessel, facilitating exchange of kind of the group of vessels, and providing high degree of allowance for disorder of arrangement of the vessel on a separate sheet and stable performance.

This suction type vessel group conveyance device is provided with a suction chamber device covering a group of vessels at one step and the separate sheet on which the group of vessels are put from an upper part to suck the separate sheet by vacuum force, a vacuum supply device supplying vacuum air into the suction chamber device, and a suction chamber moving device moving the suction chamber device in the vertical and horizontal directions to hold the group of vessels at one step and the separate sheet on which the group of vessels are put integrally for conveyance.