The present invention is related to an UV LED curing apparatus, and more particularly, to an UV LED curing apparatus with improved housing and switch controller. The light reflective inner casing is preferably provided as an effective UV light reflector and as a supporting substrate of the UV LED light source while being capable of transmitting heat from the UV LED light source away for further heat dissipation to the ambient by the outer casing. The outer casing is detachably attached to the inner casing and allows a greater user interaction for decorative and entertainment purposes while also being a protective and heat dissipation means.