The invention relates to a wind power-generating low-temperature energy accumulation system and an energy accumulation and power supply method and belongs to the technical field of energy resources. The wind power-generating low-temperature energy accumulation system comprises a wind power generator (1), an air compressor unit (2), an air separator unit (3), a liquid air storage tank (4), a liquid air pressure pump (5), a third-stage air heat exchanger unit (6), water heat accumulation equipment (7), an electric heater (8), a solid heat accumulator (9), a high-pressure turbine (10), a low-pressure turbine (11) and an energy accumulation power generator unit (12), wherein the air separator unit (3) comprises a high-pressure expansion machine (13), a first-stage heat exchanger (14), a second-stage heat exchanger (15) and a throttling valve (16). The wind power-generating low-temperature energy accumulation system is characterized in that energy is accumulated by utilizing low-temperature compressed air and is released at the electricity consumption peak to generate power; and meanwhile, higher-grade energy is obtained through liquid and solid heat accumulation to improve the power generation efficiency of the power generator. The wind power-generating low-temperature energy accumulation system has the benefits that the energy density is large, the energy utilization ratio is high, no limitation of geographical conditions exists, and the peak-avoiding power generation is realized.