An LED lamp includes a first heat sink, a second heat sink and a plurality of LED modules. The second heat sink is located at a lateral side of the first heat sink and pivotally connects with the first heat sink. The LED modules are evenly attached on bottoms of the first and second heat sinks. The second heat sink can be rotated relative to the first heat sink to be fixed at a required position, whereby an illumination angle of the LED lamp can be adjusted. Heat generated by the LED modules is dissipated by the first and second heat sinks.