Provided is a pyribencarb aqueous suspension agrochemical composition which contains an adjuvant for reinforcing the chemical effect of pyribencarb, and which is capable of preventing a pharmaceutical preparation from becoming solidified or highly viscous and capable of providing a sufficient pest-controlling effect by use of a small amount of pyribencarb. The aqueous suspension agrochemical composition includes: pyribencarb which is an agrochemical active component an adjuvant for pyribencarb, which is at least one compound selected from polyoxyalkylene siloxanes, polyoxyethylene/polyoxypropylene block copolymers, and polyoxyalkylene alkyl ethers a nonionic-anionic surfactant which is a polyoxyalkylene aryl ether sulfate and/or a polyoxyalkylene aryl ether phosphate and water.
