A granular pesticidal composition which comprises a pyrazolinone compound given by the formula (1): wherein R 1 represents a chlorine atom etc.； R 2 represents a chlorine atom etc.； R 3 represents a 1-methylethyl group etc.； and R 4 represents a C1-C4 alkoxy group etc. and a salt of ligninsulfonic acid, and the amount of the salt of ligninsulfonic acid in the granular pesticidal composition is 10-60% by weight has good disintegrability in water when it is diluted with water.
