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.