Provided are: a pyribencarb aqueous agrochemical suspension composition suitable for aerial dispersion, that does not lose storage stability because particle growth over time is suppressed, and that has suppressed hard cake formation even when a dispersion fluid is prepared at a high concentration with a low dilution factor when used； and a dispersal method therefor. The aqueous agrochemical suspension composition is characterized by containing an agrochemical active component pyribencarb, a polyacrylate, a surfactant, a thickener, and water. In this dispersal method for the aqueous agrochemical suspension composition: the aqueous agrochemical suspension composition is diluted in water for dispersion, by no more than 31 times on a mass basis, relative to the total amount of composition； and the prepared diluted solution is aerially dispersed from an aircraft having an agrochemical dispersion function, at a volume of 8-32 kg per 1 ha of arable or non-arable land.
