Abstarct: Soil pollution with heavy mextals like cadmium is one of the serious problems in crop production in agriculture. High mobility of this mextal in plant-soil system accelerates its entrance to the food chain. According to growing needs for communities in agriculture production and limiting factors like stress caused by heavy mextals, appears to be essential the appropriate management strategies to reduce the harmful effects of heavy mextals. Nowadays, biological method such as phytoremedation and symbiosis with plant roots and microorganisms are used to solve the problem. In order to study the effect of arbuscular mycorrhiza (AM) on uptake and accumulation of cadmium in plant tissues of sunflower at different levels of phosphorus an experiment was conducted as factorial baxsed on randomize complete block in greenhouse conditions in Agriculture Faculty of Shahrood University. The experiment had three levels of P (0, 40 and 100 mg per kg of soil) and cadmium (5,10 and 25 mg per kg of soil) and mycorrhiza (Glomus intraradices) two levels inoculation and non-inocolation was performed in 6 replicates in sunflower. The result showed that elevated levels of phosphorus increased dry weight of shoot, leaf and root and caused shoot and root elongation. In oder hand increased levels of cadmium followed by decreased dry weight shoot, leaf, root, flower and length shoot and number leaves. Increasing available P to 100 mg/kg reduced mycorrhiza colonization and it seems phosphorus concentration of 40 mg/kg was suitable for colonization of mycorrhiza fungi. It also found that mycorrhiza plants root cadmium, leave cadmium and phosphorus and leaf dry weight had more rather than non-mycorrhiza plants. Uptake efficiency, phytoxtraction efficiency and AM effectiveness increased with increasing levels of cadmium. Translocation factor decreased with increasing phosphorus and cadmium. The amount of leaf chlorophyll in the presence of mycorrhiza fungi increased with increasing phosphorus levels. Totally, it is speculated that AM fungi are enable to increased plant uptake and accumulation of cadmium and decreased cadmium stress in sunflower. These results are important in phytoremediation of cadmium polluted soils.