The invention discloses a curing and stabilizing treatment method for garbage incineration fly ash. The curing and stabilizing treatment method for the garbage incineration fly ash includes the following steps that chelating curing treatment is carried out on the incineration fly ash through a dithiocar-bamate chelating agent; cement and the fly ash subjected to chelating curing treatment are mixed in a dry mode, and a fly ash mixture is obtained; a certain number of organic fibers are added into the fly ash mixture; a certain amount of polyacrylamide is added into the fly ash mixture; sodium silicate is dissolved in water, the sodium silicate aqueous solution is injected into the fly ash mixture and stirred evenly, and forming is achieved. The curing and stabilizing treatment method can be used for carrying out curing and stabilizing on the incineration fly ash of dangerous waste, improves the strength of a solidified body of the fly ash, lowers the leaching toxicity of heavy metal of the fly ash, and provides technical support for solidified body burying or resource utilization of the fly ash.