The utility model relates to an electric lamp which comprises a power supply plate and a light-emitting unit. The power supply plate and the light-emitting unit are separated from each other. The power supply plate is of a face plate structure, two groups of exposed conducting strips at intervals are arranged on the surface of the power supply plate, and the two groups of the conducting strips are connected with the output end of a safety power supply respectively. A plate body of the power supply plate comprises magnetic materials, an LED light-emitting source is packaged in the light-emitting unit, an electrode extends out of the bottom of the light-emitting unit, the light-emitting unit is absorbed on the surface of the power supply plate through a magnetic block, and the electrode of the light-emitting unit is in contact with the conducting strips of the power supply plate to obtain electricity to give out light. The light-emitting unit can be freely adjusted and combined at the different positions of a plurality of power supply plates, so that the luminance requirements can be adjusted flexibly.