Abstract: Herbicides are used in agricultural areas to reduce harmful of weeds. Herbicides could decimate some weeds and slow down growth in others. Using herbicide has increased significantly since the mid-20th century. In case that herbicides are not used, significant quantitative and qualitative losses will have occurred in agricultural production. However, the side effects caused by the wide and irrational use of herbicides threaten the environment and human health. Although herbicides are the least harmful among pesticides, many studies have shown the serious negative effects of herbicides on the environment and human health. Every year a list of herbicides that cause cancer or leave large residues in the soil and water are published. However, many herbicides have been banned, but only after they have been used in tons and causing environmental pollution.