The invention discloses a polyacrylate emulsion pressure-sensitive adhesive for electronic protective films, a preparation method and application thereof. The polyacrylate emulsion pressure-sensitiveadhesive for electronic protective films includes 0.008-0.02 part of an external crosslinking agent and a coating agent, wherein the coating agent comprises the following components by weight: 75-100parts of an acrylate soft monomer, 4-13 parts of an acrylate hard monomer, 1.5-3.5 parts of a polar monomer, 0.15-0.45 part of an internal crosslinking monomer, 0.3-0.5 part of a reactive anionic emulsifier, 0.15-0.3 part of a reactive nonionic emulsifier, 0.2-0.5 part of an initiator, 100-150 parts of deionized water, and 0.5-1.5 parts of a PH regulator. The polyacrylate emulsion pressure-sensitive adhesive for electronic protective films provided by the invention can improve the rigidity of a polymer structure, ensures the weather resistance of pressure sensitive adhesive, uses water insteadof organic solvent to serve as the medium, is low carbon and environment-friendly, and saves cost.