Provided is a method for producing an aqueous synthetic resin emulsion having a high solids fraction concentration and low viscosity with which it is possible to obtain a reemulsifiable synthetic resin powder having excellent workability after reemulsification. A method for producing an aqueous synthetic resin emulsion for emulsion polymerizing a polymerization component [1] in the presence of a polyvinyl alcohol resin, wherein the method for producing an aqueous synthetic resin emulsion contains a hydrophobic monomer having a solubility in 20°C water of 0.1% or less in a quantity of 30 wt% or more relative to the entire polymerization component [1] and conducts emulsion polymerization while continuously adding the total amount of polymerization component [1] in an aqueous medium.
