A combined dynamic effect wheel, comprising a light source; and an effect wheel bottom plate, wherein the effect wheel bottom plate is provided with a light-through hole and several pattern bases, each pattern base is provided with a pattern sheet, a pattern distribution region on each pattern sheet defines an effective pattern region; a light beam emitted by the light source is configured to selectively pass through the light-through hole or project out through one of the several pattern bases, and a light spot with an obvious boundary formed by the emitted light beam defines an effective light spot; wherein a first rotating assembly and a second rotating assembly are provided at a center of the effect wheel bottom plate, and the effect wheel bottom plate is driven by the first rotating assembly to rotate so as to enable different pattern bases or the light-through hole to be switched in or out of a light path; wherein each pattern base is provided with a driven assembly which is fitted and connected to the second rotating assembly and is driven by the second rotating assembly to rotate so as to drive the pattern sheet of the pattern base to rotate; and characterized in that a size of an effective pattern on each pattern sheet is greater than twice the size of the effective light spot of the light beam passing through the pattern sheet, and when the pattern sheet is switched into the light path, the pattern sheet forms a dynamic pattern effect during the rotation thereof, and the effective light spot of the light beam passing through the pattern sheet is distributed outside a center point of the pattern sheet. a light source; and an effect wheel bottom plate, wherein the effect wheel bottom plate is provided with a light-through hole and several pattern bases, each pattern base is provided with a pattern sheet, a pattern distribution region on each pattern sheet defines an effective pattern region; a light beam emitted by the light source is configured to selectively pass through the light-through hole or project out through one of the several pattern bases, and a light spot with an obvious boundary formed by the emitted light beam defines an effective light spot; wherein a first rotating assembly and a second rotating assembly are provided at a center of the effect wheel bottom plate, and the effect wheel bottom plate is driven by the first rotating assembly to rotate so as to enable different pattern bases or the light-through hole to be switched in or out of a light path; wherein each pattern base is provided with a driven assembly which is fitted and connected to the second rotating assembly and is driven by the second rotating assembly to rotate so as to drive the pattern sheet of the pattern base to rotate; and characterized in that a size of an effective pattern on each pattern sheet is greater than twice the size of the effective light spot of the light beam passing through the pattern sheet, and when the pattern sheet is switched into the light path, the pattern sheet forms a dynamic pattern effect during the rotation thereof, and the effective light spot of the light beam passing through the pattern sheet is distributed outside a center point of the pattern sheet.