Disclosed is an aqueous suspension agricultural chemical composition having good storage stability at high temperatures and wherein grain growth of an agricultural chemical active ingredient is suppressed. Specifically disclosed is an aqueous suspension agricultural chemical composition characterized by containing an agricultural chemical active ingredient, water, a resin and a lignin sulfonic acid salt having a weight average molecular weight of not more than 20,000. This aqueous suspension agricultural chemical composition is suppressed in grain growth of the agricultural chemical active ingredient and has good storage stability at high temperatures. Rosin derivatives are preferable as the resin contained in the aqueous suspension agricultural chemical composition. Among the rosin derivatives and a rosin glycerin ester is more preferable.
