The utility model relates to an LED lighting device which comprises a shell portion, multiple substrates and multiple heat dissipation portions. The shell portion is provided with a light releasing opening, and multiple holding faces are arranged on a part of the inner surface of the shell portion. The substrates are arranged on the holding faces respectively and provided with multiple LEDs respectively. The heat dissipation portions are arranged on the portions, used as the outer sides of the holding faces, of the outer surface of the shell, and therefore the substrates are cooled. The substrates with the LEDs are placed at different positions, so that light distribution can be conducted without consideration of the position, heat dissipation units can be placed on all cutting positions, and therefore the heat dissipation performance of the high-power LED lighting device can be improved.