A toy top set, comprising: a toy top comprising a pinion gear which is disposed on an input shaft disposed on a body portion and having a same center axis with a rotation shaft, and a locking portion which is disposed directly above the pinion gear on the input shaft and which protrudes outward in a radial direction over a valley of the pinion gear; and a launcher comprising a rack belt comprising an elastically deformable belt portion on which rack teeth capable of intermeshing with the pinion gear are formed, and a holder to which the rack belt is attached, wherein the launcher is configured to launch the toy top such that the toy top is set to the holder by intermeshing the rack teeth with the pinion gear below the locking portion so as to fit the belt portion below the locking portion, a rotational force is then applied to the toy top by pulling the rack belt in a predetermined direction to rotate the pinion gear, and subsequently the intermeshing of the pinion gear and the rack teeth is released, wherein a space is formed in the holder, which is disposed in a vicinity of an intermeshing portion of the rack teeth and the pinion gear and which allows elastic deformation of the belt portion so that the belt portion of the rack belt previously attached to the holder does not interrupt setting the toy top to the holder, and wherein the holder comprises a belt guide which is configured to be in contact with an opposite face from the rack teeth of the belt portion to guide the belt portion so that the pinion gear and the rack teeth intermesh with each other by means of elasticity of the belt portion; wherein the upper face of the locking portion is formed in a bevel shape that expands in diameter toward its lower end, such that the belt portion is pushed by the beveled portion to retract outward from the locking portion when the toy top is pressed against the holder, while keeping the rack belt attached to the holder; the belt portion being configured to elastically return to its original shape such that the rack teeth and pinion gear intermesh with each other. a toy top comprising a pinion gear which is disposed on an input shaft disposed on a body portion and having a same center axis with a rotation shaft, and a locking portion which is disposed directly above the pinion gear on the input shaft and which protrudes outward in a radial direction over a valley of the pinion gear; and a launcher comprising a rack belt comprising an elastically deformable belt portion on which rack teeth capable of intermeshing with the pinion gear are formed, and a holder to which the rack belt is attached, wherein the launcher is configured to launch the toy top such that the toy top is set to the holder by intermeshing the rack teeth with the pinion gear below the locking portion so as to fit the belt portion below the locking portion, a rotational force is then applied to the toy top by pulling the rack belt in a predetermined direction to rotate the pinion gear, and subsequently the intermeshing of the pinion gear and the rack teeth is released, wherein a space is formed in the holder, which is disposed in a vicinity of an intermeshing portion of the rack teeth and the pinion gear and which allows elastic deformation of the belt portion so that the belt portion of the rack belt previously attached to the holder does not interrupt setting the toy top to the holder, and wherein the holder comprises a belt guide which is configured to be in contact with an opposite face from the rack teeth of the belt portion to guide the belt portion so that the pinion gear and the rack teeth intermesh with each other by means of elasticity of the belt portion; wherein the upper face of the locking portion is formed in a bevel shape that expands in diameter toward its lower end, such that the belt portion is pushed by the beveled portion to retract outward from the locking portion when the toy top is pressed against the holder, while keeping the rack belt attached to the holder; the belt portion being configured to elastically return to its original shape such that the rack teeth and pinion gear intermesh with each other.