Conventional fungicidal compositions have had practical problems such that either a preventive effect or a curative effect is inadequate, the residual effect tends to be inadequate, or the controlling effect against plant diseases tends to be inadequate depending upon the application site, and a fungicidal composition to overcome such problems has been desired. The present invention provides a fungicidal composition containing a carboxylic acid amide derivative of the formula (I) or a salt thereof, as an active ingredient: wherein A is phenyl which may be substituted, benzodioxolanyl which may be substituted, or benzodioxanyl which may be substituted B is 2- or 3- pyridyl which may be substituted each of R1 and R2 is alkyl, or R1 and R2 may together form a 3- to 6-membered saturated carbon ring, provided that when B is 3-pyridyl which may be substituted, A is phenyl substituted by at least two substituents.
