The utility model relates to a solar street lamp double-power source delay automatic switching circuit and belongs to the solar energy street lamp technical field. The objective of the utility model is to provide a low-cost solar street lamp control circuit capable of realizing double-power source automatic switching. The solar street lamp double-power source delay automatic switching circuit includes a photovoltaic solar panel, a photovoltaic controller, a storage battery, an inverter, a solid state relay, an alternating current contactor, a fuse, a time relay, a photosensitive switch K1 and a street lamp L1. The solar street lamp double-power source delay automatic switching circuit of the utility model is applicable to the solar street lamp field.