Food is necessary for a healthy lifestyle, but it’s an important way of spreading many pathogens and toxic chemicals. The food contamination may happen during planting, harvesting, storing, processing or transporting. Hence, the food quality monitoring is necessary. Plants constitute the main source of food for human being. Fighting against pests and plant diseases in some cases, prevents product loss. It is obvious that the pest control is crucial for the future agriculture, industry and hygiene. Despite the current discussions and critics in scientific conventions about the adverse effects of pesticide use on human life, chemical based methods of pest control are still the most common among the farmers. Pesticide residues in agricultural products due to inappropriate and excessive consumption of pesticides is a worldwide problem that has overshadowed the health of human societies (1). Bushehr province, according to its weather conditions, is one of the major tomato growers in the country in autumn and winter. In this study, the residues of 9 toxins (Cypermethrin, Permethrin, Indoxacarb And Mancozeb, Chlorothalonil, Iprodione, Thiophanate methyl, Carbendazim Golsam, and Abamectin) has been investigated in 37 Tomato samples from the farms of Jam, Dashtestan, Dashti, Deir and kangan cities, and Except Abamectin other toxins were detected. Cypermethrin rate was higher than standard in 2.8% of the samples. The residues of Permethrin, Indoxacarb, Mancozeb, Chlorothalonil, Iprodione and Thiophanate methyl was lower than the allowed limits in all the samples. The amount of Carbendazim was determined to be higher than the allowed limits in 4.8% of the samples.