A method for producing a rubber wet masterbatch includes mixing a rubber latex solution and a coagulant with a carbon black-containing slurry aqueous solution in which a carbon black is dispersed in water, to produce a carbon black-containing rubber latex aqueous solution having a pH of 7 to 8.5; adding additional coagulant to the carbon black-containing rubber latex aqueous solution obtained to produce a carbon black-containing rubber coagulum; and dehydrating and drying the carbon black-containing rubber coagulum obtained to produce a rubber wet masterbatch, wherein a rubber component contained in the rubber latex solution is added at an addition rate of 10 g/min or more and 100 g/min or less and the part of the coagulant is added at an addition rate of 10 mmol/min or more and 100 mmol/min or less per 100 g of the carbon black contained in the carbon black-containing slurry aqueous solution.