The present invention provides a composition for controlling plant diseases having an excellent control efficacy on plant diseases. A composition for controlling plant diseases comprising an carboxylic acid compound represented by a formula (I): wherein each of symbols are the same as defined in the Description or salts thereof and at least one kind of compounds selected from the group (A) consisting of kresoxim-methyl, azoxystrobin, pyraclostrobin, picoxystrobin, enestrobin, trifloxystrobin, dimoxystrobin, fluoxastrobin, orysastrobin, famoxadone, fenamidone, metominostrobin, a compound represented by a formula (II): and pyribencarb shows an excellent controlling efficacy on plant diseases.
