A triazole compound of the-formula (I): ##STR1## wherein Ar is a substituted phenyl group, R.sup.1, R.sup.2 and R.sup.3 each represents, the same or different, a hydrogen atom or a lower alkyl, R.sup.4 and R.sup.5 each represents, the same or different, a hydrogen atom, an alkyl group, an aralkyl group, an aryl group or an aromatic heterocyclic group or R.sup.4 and R.sup.5 together with the nitrogen atom to which they are attached may form a heterocyclic ring, or its salt, which is useful as antifungal agents.