The present invention relates to fungicidal mixtures comprising, as active components,1) at least one 2,4-disubstituted N-biphenylpyrazolecarboxamide of the formula I in which X=oxygen or sulfur; R1 and R2=independently of one another cyano, nitro, halogen, C1-C6-alkyl, C1-C6-haloalkyl, methoxy, difluoromethoxy or trifluoromethoxy; R3=halogen, C1-C4-alkyl or C1-C4-haloalkyl; R4=hydrogen or halogen; and 2) at least one active compound II selected from groups A) to F): A) azoles; B) strobilurins; C) carboxamides; D) heterocyclic compounds; E) carbamates; F) other fungicides; in a synergistically effective amount, methods for controlling harmful fungi using mixtures of at least one compound I and at least one active compound II, the use of the compounds I with active compounds II for preparing such mixtures and also compositions and seed comprising these mixtures.