The traffic of vehicles which use gasoline containing lead as fuel considered as a source of pollutants for farms which are located in cross town wayside of Nowshar and Chalus cities. In order to determine the rates of the exiting lead in soils and plants in these waysides, the sampling of them in different distances from the road was carried out, and the rates of the existing lead in the samples was determined by international standard method and also by use of Atomic Absorption Spectrophotometer (A.A.S).The results indicate that the most concentration of lead are in soils and plants on waysides (distances less than 30m) than longer distances (100 and 150m) from the road. Significant the results show that there is significant difference in the rates of lead in leaves between Kiwi and Citrus gardens in different distances of roads with reliability of 99% and also there is a meaningful difference between the rate of lead in Kiwi and Citrus gardens with reliability of 95%. There is a meaningful difference in the rate of lead between different parts of rice stew with the reliability of 95%, while there is no meaningful difference in other organs. As the soils and plants of this region is polluted by lead and in view of the cultivation of agriculture and garden product in polluted soils of the cross of Mazandaran Province, there could has been harmful consequences so it is suggested that while using gasoline without lead for car, serious action must be taken for determination of limits of roads and for prevention of the cultivation of the agricultural plants in less than 30 m of the roads.
