The invention relates to a preparation method of an acrylate high-performance environmentally-friendly pressure-sensitive adhesive. The method comprises the following steps: a, preparation of a seed pre-emulsion; b, preparation of a shell layer monomer pre-emulsion; and c, preparation of a core-shell emulsion. The invention adopts a feeding mode of continuously adding an oxidation-reduction initiator at a constant speed dropwise to replace a one-time feeding mode of adding a thermal initiator, a shell layer adopts a blended crosslinking agent of divinylbenzene and glycol dimethacrylate, and polyamyl acrylate is used as a seed. According to the preparation method provided by the invention, the obtained pressure-sensitive adhesive has excellent water resistance and viscosity-holding performance, the polymerization temperature is reduced during the polymerization, and energy sources are saved.