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  Cultivated mushrooms are considered as a popular delicacy and have an important role in daily intake due to essential Amino Acids, elements and vitamins. Based on Several Studies, mushrooms can accumulate great concentrations of toxic metallic elements like lead and cadmium in Comparative to other Fruits and vegetables. This study has conducted due to following reasons: - Lead and Cadmium have Considerable toxic effects even in low Concentrations. - There is no reports about these elements contents in mushrooms cultivated in Iran. - There is no Proper strategy for this infection control Material and Method: 8 mushroom Samples were collected randomatically from mushroom sale centres in Tehran, and delivered to laboratory. Then they were sorted, cut, washed, and dried at 80°c for 20h. Dried Samples were homogenized and laid in ash. Then they were Solved in Nitric Acid and finally analysed by Atomic Absorption Spectrometer. Results: Cadmium Content was lower than acceptable level (EU 466/2001) (2.0 mg/kg dry weight) in all samples. Lead content was generally lower than acceptable level (3.0 mg/kg dry weight) except for 2 Samples which have 5.35 mg/kg and 3.71 mg/kg Lead Content. Conclusion: Analysed Samples have low content of cadmium due to cultivating environment, good quality of Compost and irrigation with deep underground water. Geographical Condition of Cultivation may cause high content of lead in two Samples. It is recommended to investigate the main reason of this infection.  

Keywords: Heavy metals, Key words: Cultivated edible Mushroom, Lead (Pb), Cadmium (Cd), Atomic absorption Spectrometer (AAS)

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