The invention discloses a high-strength efficient heat dissipation type solar LED street lamp. The street lamp comprises a controller, a main lamp pole, a first auxiliary lamp pole, a second auxiliary lamp pole, a solar panel, a storage battery, a solar panel bracket fixed to the main lamp pole and a lamp cap fixed to the first auxiliary lamp pole, wherein the lamp cap comprises a lampshade, a mounting substrate, a light-transmitting lens and a plurality of LED lamp beads arranged on the mounting substrate, the mounting base plate is fixedly connected with a heat conduction block, the heat conduction block is connected with heat dissipation fins, the first end of the first auxiliary lamp pole is connected with the side wall of the main lamp pole, the second end of the second auxiliary lamp pole is connected with the lamp cap, the first end of the second auxiliary lamp pole is connected with the top end of the main lamp pole, and the second end of the second auxiliary lamp pole is connected with the side wall of the first auxiliary lamp pole. The street lamp is good in heat dissipation performance and high in strength.