A light curing device includes a housing module and a lighting module. The lighting module includes a light emitter, a driver and a switch module. The light emitter includes a plurality of light-emitting elements configured to emit curing light into an irradiation space in the housing module. The driver is for driving the light-emitting elements, and includes a plurality of user-operable setting buttons corresponding to at least one of the light-emitting elements. When triggered, the switch module is operable to activate the driver to drive at least one of the light-emitting elements that corresponds to a selected one of the user-operable setting buttons to emit the curing light.