The invention discloses an improved type synthesis process of a rubber aid. The synthesis process particularly comprises the following steps: adding an N-(4-methyl phenyl)2-N'-(1,3-dimenthyl butyl)p-phenylenediamine anti-ageing agent and an N,N'-diphenyl p-phenylenediamine anti-ageing agent into an acetone organic solvent simultaneously, stirring uniformly, adding vinyl stearate amide, and mixinguniformly to obtain a mixed solution; under the stirring condition, adding water and ethyl acrylate into the mixed solution, continuously adding para-hydroxybenzole dropwise after mixing uniformly, and controlling the reaction temperature to 50 DEG C, and after complete dropwise addition of the para-hydroxybenzole, heating to 80 DEG C, continuously performing reaction, cooling to room temperature,and performing extraction, washing, and drying to obtain a finished product. According to the synthesis process provided by the invention, the integrated step is simple, preparation of the anti-ageing agent can be completed at low temperature and within short time, the synthesis cost is greatly reduced and the economic benefit is improved.