Provided is a novel aqueous emulsion solution that can be formed into a binder for coating film formation purposes which is suitable for an inkjet printing mode. An aqueous emulsion solution comprising a polymer (I) and a polymer (II) in a mixed state, wherein the polymer (I) is an A-B block copolymer containing 90% or more of a methacrylate monomer and is neutralized with an alkali agent, the chain A is substantially insoluble in water and has a number average molecular weight of 1000 to 10000 and a dispersion degree of 1.5 or less, the chain B is synthesized using a monomer containing methacrylic acid and has an acid value of 30 to 250 mgKOH/g, the A-B block copolymer has a number average molecular weight of 5000 to 20000, a chain A content of 5 to 60% and an entire dispersion degree of 1.6 or less, the polymer (II) is produced by polymerizing a hydrophobic addition-polymerizable monomer and has a Tg value of 70 C or lower, and the ratio of the amount of the polymer (I) to the amount of the polymer (II) is (5 to 80):(95 to 20) by mass.