Compound disperse yellow dye

The invention relates to a disperse dye formula and especially relates to a compound disperse yellow dye. The compound disperse yellow dye is prepared by mixing 56 to 64wt% of a mixture of a dye monomer A and a dye monomer B, and 36 to 44wt% of a dye monomer C, wherein chemical formulas of the dye monomers A, B and C are shown in the patent specification. The compound disperse yellow dye can replace disperse yellow RGFL, and has the dyeing effect the same as the dyeing effect of the disperse yellow RGFL. A ratio of the mixture of the dye monomer A and the dye monomer B to the dye monomer C in the compound disperse yellow dye can be kept, wherein a ratio of the dyeing monomer A to the dyeing monomer B is arbitrary. In compound disperse yellow dye preparation, the dye monomers are added with an assistant and water and the mixture is grinded by a sand mill and then is dried to form the dried compound disperse yellow dye. The compound disperse yellow dye has a disperse yellow RGFL color, can be used directly and