An LED light bar includes several LED light sources (1) and a bar light source mounting base (2). The light source mounting base (2) is made of an insulating and heat-conducting material. An electrical layer having several metal electricity-conducting plates is embedded in an inner part of the light source mounting base (2). The LED light sources (1) are welded on the metal electricity-conducting plates to form an electrical electricity-conducting circuit. Lighting sides of the LED light sources (1) are exposed on a surface of the light source mounting base (2). The light source mounting base (2) and the metal electricity-conducting plates are formed into a whole. Each LED light source (1) is covered by lenses (4).
