There is provided a plant disease controlling composition comprising, as active ingredients, a compound represented by the formula (I), as well as at least one compound A selected from the group consisting of dimoxystrobin, trifloxystrobin, azoxystrobin, pyraclostrobin, a compound represented by the formula (II) and an agrochemically acceptable salt of the compound represented by the formula (II): wherein, R1, Q, X, Y, Z, M and n are as defined in the description. Also provided is a method for controlling a plant disease, which comprises applying the compound represented by the formula (I) as well as at least one compound A selected from the group consisting of dimoxystrobin, trifloxystrobin, azoxystrobin, pyraclostrobin, the compound represented by the formula (II) and an agrochemically acceptable salt of the compound represented by the formula (II) to a plant, a seed of a plant or a cropland.
