A pesticidal/ovicidal composition comprising: (a) 50-97.9 parts by mass of a triglyceride containing not less than 50% of oleic acid as a fatty acid component (b) 0.1-20 parts by mass of a cationic surface active agent and (c) 2-30 parts by mass of a glycerin derivative, and a pesticidal/ovicidal method using the same. The composition according to the invention has not only a pesticidal activity but also an ovicidal activity on crop pests, and provides a safe and high pesticidal/ovicidal effect.
