An illuminating lamp includes a box-shaped casing, a plurality of LED light-emitting elements disposed on a light-emitting surface of the box-shaped casing, a conducting wire and an electrical plug for connecting a power source, and a selector switch panel for functional operation disposed on a nonlight-emitting surface of the box-shaped casing. A transparent or semi-transparent outer protective cover is disposed outside the light-emitting surface of the box-shaped casing. A control device including a plurality of control units is disposed in the box-shaped casing.