The invention relates to a direct injection process of disperse dyes, belonging to the technical field of dyeing or printing of textiles. The direct injection process comprises the steps of color paste blending, printing and after-treatment, wherein the color paste is prepared from the following components in percentage by mass: 15%-22% of a toner, 18%-30% of glycerin, 15%-20% of a dispersing agent A, 3%-10% of a dye-resistant agent and the balance of water. The printing comprises the steps of carrying out platemaking by virtue of the color paste according to requirements, and carrying out printing processing on a to-be-processing shell fabric, wherein the printing temperature is 180-210 DEG C, the printing speed is 10-13 m/min, and the feeding rate of the color paste is 30%-45%. The invention is applied to the dyeing or the printing of the textiles and has the advantages of good dyeing effect, high color definition rate, and the like.