Abstract: The present invention relates to a N-(Phenylcycloalkyl)carboxamide or N-(Benzylcycloalkyl)carboxamide or its thiocarboxamide derivative of formula (I) wherein A represents a carbo-linked, unsaturated or partially saturated, substituted or non-substituted 5-membered heterocyclyl group, T represents an oxygen or a sulphur atom, B represents a non aromatic carbocycle that can be substituted by one to four C1-C8-alkyl groups, and X, Z1, Z2 and Z3 represent various substituents; their process of preparation; the preparation of intermediate compounds; their use as fungicide active agents, particularly in the form of fungicide compositions and methods for the control of phytopathogenic fungi, notably of plants, using these compounds or compositions.