ABSTRACT Pesticides, despite their known toxicity, are widely used in developing countries, so assessment of their use patterns is important. Farmers in the Tizi-Ouzou region are increasingly using pesticides to control crop pests. This study characterised the types of pesticides used in this region, forms of application, and impacts on human health. A total of 100 farmers and 50 distributors participated in this study through in-depth interviews. The results show the promotion and use of several active ingredients, mainly neonicotinoids (20%), triazoles (17%), and organophosphates (9%). Pesticide use practices do not comply with the rules of good agricultural practice. Indeed, the frequency of treatments and the quantities to be applied are determined arbitrarily (36%). This leads to harmful consequences for both the environment and human health.