The present invention relates to a diene-based rubber latex having a large diameter containing a polymer aggregate, a method for manufacturing the same, and a graft copolymer having a core-shell structure having excellent impact strength and surface properties, including an unsaturated carboxylic acid or an ester thereof A diene rubber latex having an average particle diameter of 600 nm to 800 nm is provided, comprising a monomer derived unit and a comonomer derived unit having a functional group, and enlarged by a polymer aggregate having an average particle diameter of 230 nm to 300 nm.
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