The invention relates to a solid waste two-stage pyrolysis gasification system based on a fluidized bed and a moving bed. The system comprises a circulating fluidized bed vaporizer and a secondary cyclone separator thereof, a pyrolyzer and a cyclone separation type reactor thereof, a charcoal collector, a solid waste feed system and the like. The circulating fluidized bed vaporizer and the pyrolyzer of the moving bed are used to realize two-stage pyrolysis gasification, and the cyclone separation type reactor is used to sufficiently mix hot bed materials and pyrolysis gas, thus greatly promoting tar splitting and gas purification. Through optimally designing the vaporizer and pyrolyzer structure form, mixing different bed materials for use, improving a bed material circulation flow system and gas solid mixing level, and improving the feed system, synthesis gas and the pyrolysis gas are produced simultaneously, the overall pyrolysis gasification efficiency and a pyrolysis gas heat value are greatly improved and increased, tar content in the synthesis gas and the pyrolysis gas is reduced, and the synthesis gas and the pyrolysis gas do not contain pollutants such as dioxin, thus effectively preparing the high-quality clean pyrolysis gas and synthesis gas.