The invention belongs to the technical field of emulsion paint preparation, and discloses an emulsion paint with a property of electromagnetic shielding. The paint is prepared by the following processes of (1) putting deionized water, organosilicone antifoaming agents, bentonite, a silane coupling agent, hydroxyethyl cellulose and nano-silica into an vacuum mixer to be stirred for 2 hours in a speed of 600 rpm; (2) then putting texanol, preservatives and electromagnetic shield agents into the vacuum mixer to be stirred for 30 min in a speed of 1000 rpm, wherein texanol serves as an aesters-type coalescing agent; (3) adding polyvinyl acetate emulsion, a urethane-urea thickner and stearic acid into the vacuum mixer for stirring for 30 min in a speed of 1000rpm to obtain the emulsion paint. The emulsion paint has the great property of electromagnetic shielding.