Strawberry (Fragaria ananassa Duch.) is valuable for its high taste, nutritional, medicinal and dietary properties of the fruits. Strawberries are the first to open the season of fresh berries. They are especially rich in sugars, organic acids, pectin, vitamins and mineral elements. The total area of strawberry plantations in Ukraine, according to the State Statistics Service, is 8200 ha. The average yield reaches 6.9 tons / ha. In order to develop an effective disease protection system, it is necessary to detect and diagnose the disease in time. An assessment of disease spread and severity was conducted in 2020-2021 in the Right Bank Forest-Steppe of Ukraine. The most common diseases were gray mold (Botrytis cinerea Pers.), leaf scorch (Diplocarpon earlianum (Ellis & Everh.) F.A. Wolf), powdery mildew (Podosphaera aphanis (Wallr.) U. Braun & S. Takam.), black spot (Соlletotricum acutatum J.H. Simmonds), white leaf spot (Ramularia grevilleana (Tul. & C. Tul. ex Oudem.) Jørst.). On strawberry plantations, diseases appeared in the following order: gray mold, white leaf spot, powdery mildew, black spot, leaf scorch. The most spread and the most harmful were gray mold, white leaf spot and leaf scorch.