The invention relates to a method for chemical removal of a residual monomer in rubber latex, which is characterized by comprising: heating to raise the reaction temperature when the monomer conversion rate reaches more than 85 percent during preparation of the rubber latex via emulsion polymerization of the monomer, and adding water-soluble initiators under the nitrogen pressure of 0.02-0.04MPa,wherein the best amount of the added initiator solution is 0.1-2 portion(s) while the mass of the dry latex is 100 portions. The reaction time is 1-3 hour(s). The rubber prepared in the method for removal of the residual monomer in the latex contains fewer impurities, the degassing time is short, and the production efficiency is high. The method can be applied in preparation of synthetic rubber latex containing gel, containing no gel, with high Mooney viscosity, with low Mooney viscosity and with polar groups and other types of synthetic rubber latex with high adhesiveness, and the prepared product can be applied in medical gloves, condoms, food package coating and the like.