Abstarct: Along with the occurrence of population growth, industrial and mining activities development have been happened. The consequence of these activities is environmental pollution, especially with heavy mextals. One of the most important elements, is lead, because it is highly toxic in soluble ionic forms, and can reduce the quality and yield of crops that have grown in contaminated soils by this element. Root symbiosis with mycorrhizal fungi can increase plant resistance against heavy mextals; also the availability of this Element for plant roots can reduce by compounds with low solubility and their sedimentation by phosphorous amendments. Therefore, this study was carried out as a factorial experiment in a randomized complete block design in Shahrood university research greenhouse. Treatments included mycorrhizal fungi with two levels inoculation and without inoculation and organic and inorganic phosphorous fertilizers such as the control ,humic acid, diammoniumphosphate, bone meal and bone meal+humic acid on maize and sunflower. The results showed that inoculation with mycorrhizal fungi has caused a significant increase in percentage of mycorrhizal colonization and root dry weight in both plants. Phosphate fertilizers significantly increased the available and soluble soil phosphorus, shoots and roots dry weight in both plants. Concentration and uptake of phosphorus in shoots and roots were significant with separate applications of mycorrhizal fungi and phosphate fertilizers in sunflower, while the interaction effects on these characteristics were significant in maize. The interaction effects of mycorrhiza and phosphorous fertilizers were significant on the decrease of soil exchangeable Pb in both plants. Treatment with di-ammonium phosphate in maize and humic acid and di-ammonium phosphate treatments with mycorrhiza in sunflower were caused the significant decrease of soil exchangeable lead. The main effects of phosphate fertilizers and mycorrhiza treatments were significant on decrease of lead concentration in shoots of both plants, while the interaction effects of phosphorus and mycorrhiza were significant on decrease of pb uptake in shoots of maize and in sunflower. The main effect of phosphorus fertilizer treatments was significant. Lead concentration in shoots of plant had the most decrease by the application of ammonium phosphate treatment, while in sunflower, di-ammonium phosphate, humic acid and bone meal treatments and the combined application of humic acid and bone meal have caused to decreased Pb concentration in shoots. Generally, in this study di-ammonium phosphate fertilizer treatment has caused the positive effect and increase of shoot and root dry weight, soil available P and decrease of soil exchangeable Pb. Lead concentration in plant and plant roots in both plants results show the use of a phosphorus amendment to reduce the amount of lead available and decreased uptake by the plant can be effective.