Fungi Albifimbria verrucaria (Alb. et Schwein.) L.Lombard et Crous (2016) is known as Myrothecium verrucaria (Alb. et Schwein.) Ditmar (1813). Recently, Myrothecium was assig-ned to Stachybotriaceae family, Ascomycotha phylum, and called Albifimbria [1].  Fungi of Albifimbria (Myrothecium) Tode ex Fries genus are widely distributed in nature as phytopathogens and can damage all parts of plants. On the leaves, pathogenicity manifests itself in the form of spots. Water ulcers may form on the stems. On solid fruits (aubergine, cucumber), spots and constrictions are formed, and the fruits acquire an ugly shape. On juicy fruits (tomato), ulcers form the fruit cracks and it rots. Rots may develop on the roots. Seed infection causes pre-germinative and post-germinative death of seedlings, stem rot, death of the growth point, and root ulcers [2]. Albifimbria phytopathogens are producers of harmful macrocyclic trichothecene myco-toxins of the verrucarin series. Under favorable weather conditions (high humidity and tempe-rature), they contaminate stubble crops and grassy pastures. After grazing animals on infected substrates, the development of myrotheciotoxicosis may occur. Horses, cattle, and sheep get sick. [3].  To protect plants from Alb.verrucaria fungus damage, it is advisable to search for fungi-antagonists that are producers of microbiological preparations. The present research aims to select strains of Trichoderma fungi that are promising for protecting plants from the toxin-pro-ducing pathogen Albifimbria verrucaria.