The present invention relates to an LED lighting structure, which includes a plurality of lighting units arranged and mounted to a base. Each lighting unit includes a seat, which has a surface to which a plurality of heat dissipation fins is mounted and an opposite surface to which a circuit board is attached. The circuit board includes a plurality of light-emitting diodes. The lighting units are arranged to allow the light-emitting diodes to face outward. In this way, all the light can be projected outward or toward a direction where lighting is desired so that no light would be wasted and the lighting efficiency and the convenience of use are improved.