Pesticides are chemical or biological substances intended to control, limit or destroy various forms of pests, weeds and infections in plants, which ultimately result in good crop yields. The active substances of the pesticides used are transported through the air, water and soil and spread and settle within the ecosystem, endangering plants and other organisms. Long after application, these harmful substances lag behind in the ecosystem and enter the food chain directly. Health hazards depend on the concentration of pesticide exposure, the mode of entry into the organism, its toxicity, mode of action, the ambient temperature at which it is applied, as well as non-compliance with the instructions for use. For the purposes of this paper, secondary data were used. The data sources of the final paper are books from various domestic and foreign sources, journals, scientific articles and content on the website that deals with the topic of the final paper.