A laminating and fabricating control apparatus comprising: a data acquirer configured to acquire data of a laminated and fabricated object as a target of laminating and fabricating; and a laminating and fabricating controller (320, 424-426) configured to control a laminating and fabricating unit including a plurality of irradiators (111, 211-212, 221-222, 311-314) configured to irradiate a laminating material, and a remover (112, 315-316, 319) configured to generate a flow path on a laminated surface, and removing dust generated by the irradiated laminating material, to cause said plurality of irradiators (111, 211-212, 221-222, 311-314) to perform irradiation to fabricate each layer of the laminated and fabricated object made of the laminating material as an aggregate of cell regions, said laminating and fabricating controller (424-426) controlling selection of each of the cell regions to be irradiated by each of said plurality of irradiators based on the data of the laminated and fabricated object, to prevent the dust generated in each of the cell regions on an upstream side of the flow path from influencing fabricating in each of the cell regions on a downstream side of the flow path, characterized in that said laminating and fabricating controller (320, 424-426) controls selection of the cell regions such that, when a first irradiator out of said plurality of irradiators (211-212, 221-222) irradiates a first cell region, a second irradiator out of said plurality of irradiators irradiates a second cell region outside an influence range on the upstream side influencing the first cell region, or a third irradiator out of said plurality of irradiators irradiates a third cell region outside the influence range on the downstream side influenced by the irradiation to the first cell region. a data acquirer configured to acquire data of a laminated and fabricated object as a target of laminating and fabricating; and a laminating and fabricating controller (320, 424-426) configured to control a laminating and fabricating unit including a plurality of irradiators (111, 211-212, 221-222, 311-314) configured to irradiate a laminating material, and a remover (112, 315-316, 319) configured to generate a flow path on a laminated surface, and removing dust generated by the irradiated laminating material, to cause said plurality of irradiators (111, 211-212, 221-222, 311-314) to perform irradiation to fabricate each layer of the laminated and fabricated object made of the laminating material as an aggregate of cell regions, said laminating and fabricating controller (424-426) controlling selection of each of the cell regions to be irradiated by each of said plurality of irradiators based on the data of the laminated and fabricated object, to prevent the dust generated in each of the cell regions on an upstream side of the flow path from influencing fabricating in each of the cell regions on a downstream side of the flow path, characterized in that said laminating and fabricating controller (320, 424-426) controls selection of the cell regions such that, when a first irradiator out of said plurality of irradiators (211-212, 221-222) irradiates a first cell region, a second irradiator out of said plurality of irradiators irradiates a second cell region outside an influence range on the upstream side influencing the first cell region, or a third irradiator out of said plurality of irradiators irradiates a third cell region outside the influence range on the downstream side influenced by the irradiation to the first cell region. <EOS>