An optical engine device with a heat dissipation function suitable for providing projection light of a projector includes a heat conductive casing, a phosphor wheel structure and a heat dissipation module. The phosphor wheel structure is disposed in the heat conductive casing. The heat dissipation module includes a channel member and a flow generation device. The channel member is disposed corresponding to the phosphor wheel structure in the heat conductive casing and has a guide channel and a nozzle extending from an outlet of the guide channel and facing a back side of the phosphor wheel structure. The flow generation device is connected to an inlet of the guide channel to generate an airflow flowing into the guide channel and passing through the nozzle for forming an impact flow toward the back side of the phosphor wheel structure.