The invention discloses an intelligent automatic regulation and control solar insecticidal lamp, comprising a rack, a solar cell panel, a microcontroller, a frequency oscillation type LED insecticidal lamp, a double-layer high-voltage contact kill power grid, a funnel type insect collecting bag, and an insect discharge pipeline, wherein the double-layer high-voltage contact kill power grid can respectively kill pest moths with different volume sizes; the funnel type insect collecting bag and the insect discharge pipeline automatically discharge the killed insect bodies into an insect decomposition pit groove below ground directly for automatic decomposition and then the decomposed insect bodies are washed away by rainwater; and for different development generations and different development periods of different types of forest pests in different seasons, a control engineering program of a target forest land is programmed and input into the microcontroller according to phototaxis, color tendency, taxis, and wave tendency of forest pests, and according to types, rules, harm times, and the best killing times of forest pest situations, thereby realizing intelligent automatic regulation and control, such as light control and rain control, of the solar insecticidal lamp. The intelligent automatic regulation and control solar insecticidal lamp disclosed by the invention is novel in design, simple in structure, low in manufacturing cost, convenient in popularization, and high in price-performance ratio, and can achieve significant economic and social benefits.