A color wheel module includes a driving assembly, a substrate, a first wavelength conversion layer, and a second wavelength conversion layer. The substrate includes an outer periphery disposed around the central axis and a first surface perpendicular to the central axis, and has a first light conversion region located on the outer periphery and a second light conversion region located on the first surface. The first wavelength conversion layer is disposed on the first light conversion region. The second wavelength conversion layer is disposed on the second light conversion region. The first excitation beam is incident to the first light conversion region along a direction perpendicular to the central axis and is converted into a first color converted beam. The second excitation beam is incident to the second light conversion region along a direction parallel to the central axis and is converted into a second color converted beam.