A plant disease control composition comprising a carboxamide compound represented by following formula (I), wherein R1 represents a hydrogen atom or a methyl group, and R2 represents a methyl group, a difluoromethyl group or a trifluoromethyl group, and one or more QoI compounds selected from group (A) consisting of dimoxystrobin, azoxystrobin, fluoxastrobin, pyraclostrobin, kresoxim-methyl, picoxystrobin, trifloxystrobin and N-methyl-alpha-methoxyimino-2-[(2,5-dimethylphenoxy)methyl]phenylacetamide is provided by the present invention, and this composition has excellent effect for controlling a plant disease.
