A three-dimensional shaping apparatus for repeatedly performing operations for ejecting, onto a shaping plate, a model material and a supporting material as shaping materials while performing scanning at least in a single direction, and for curing the materials to form slices having a predetermined thickness in a height direction, and laminating these slices in the height direction for performing shaping, the model material being to form a final shaped object, and the supporting material being to support a protruding portion of the model material and to be finally removed, the three-dimensional shaping apparatus comprising: the shaping plate for placing a shaped object thereon; a shaping-material ejection device including a plurality of model-material ejection nozzles for ejecting the model material and a plurality of supporting-material ejection nozzles for ejecting the supporting material, such that these pluralities of nozzles are arranged in a single direction; a curing device for curing the model material and the supporting material; a head portion including the shaping-material ejection device and the curing device; a horizontal driving device for reciprocatingly scanning the head portion in a horizontal direction; a vertical driving device for moving positions of the head portion and the shaping plate with respect to each other in the height direction; and a control device for controlling driving of the horizontal driving device and the vertical driving device and further for controlling the ejections of the shaping materials by the shaping-material ejection device and the curing by the curing device; wherein the control device performs control for causing the horizontal driving device to reciprocatingly scan the head portion in a single direction, further causing the shaping-material ejection device to eject the model material and the supporting material onto the shaping plate, and causing the curing device to cure the model material and/or the supporting material in at least one of forward and rearward paths in the reciprocating scanning to form the slices, further for moving the positions of the shaping plate and the head portion with respect to each other in the height direction, and for repeating the lamination of the slices to perform shaping, characterised in that the supporting material is ejected in an amount larger than the amount of the model material which is ejected, and the supporting material is shaped with a resolution lower than a resolution for the model material. the shaping plate for placing a shaped object thereon; a shaping-material ejection device including a plurality of model-material ejection nozzles for ejecting the model material and a plurality of supporting-material ejection nozzles for ejecting the supporting material, such that these pluralities of nozzles are arranged in a single direction; a curing device for curing the model material and the supporting material; a head portion including the shaping-material ejection device and the curing device; a horizontal driving device for reciprocatingly scanning the head portion in a horizontal direction; a vertical driving device for moving positions of the head portion and the shaping plate with respect to each other in the height direction; and a control device for controlling driving of the horizontal driving device and the vertical driving device and further for controlling the ejections of the shaping materials by the shaping-material ejection device and the curing by the curing device; wherein the control device performs control for causing the horizontal driving device to reciprocatingly scan the head portion in a single direction, further causing the shaping-material ejection device to eject the model material and the supporting material onto the shaping plate, and causing the curing device to cure the model material and/or the supporting material in at least one of forward and rearward paths in the reciprocating scanning to form the slices, further for moving the positions of the shaping plate and the head portion with respect to each other in the height direction, and for repeating the lamination of the slices to perform shaping, characterised in that the supporting material is ejected in an amount larger than the amount of the model material which is ejected, and the supporting material is shaped with a resolution lower than a resolution for the model material.