Green preparation process of epoxy resin emulsion

The invention relates to the field of emulsion preparation processes, and particularly discloses a green preparation process of an epoxy resin emulsion. The process comprises the following steps: S1, mixing 35-65 parts by mass of a liquid epoxy resin, 0.2-1 part by mass of a reaction type self-emulsifying agent and 2-10 parts by mass of an alcohol ether solvent, and carrying out low-speed stirring for 30-40 min to obtain an oil phase solution; S2, controlling the stirring speed to be 1000-1200r/min, adding 35-60 parts by mass of deionized water into the oil phase solution by multiple times, and continuing stirring for 1-2h after the addition is completed so as to obtain a mixed solution; and S3, standing and filtering the mixed solution, and performing discharging to obtain an epoxy resin emulsion, wherein the reaction type self-emulsifying agent is a plant degradable reaction type self-emulsifying agent containing amino and epoxy groups at the same time. By using the novel plant degradable reaction type self