Abstract:Microwave digestion and dry ashing were used to treat mushrooms，golden needle mushroom，auricula，oyster mushroom，which from a farmer′s market were evaluated，and then lead（Pb），cadmium（Cd），chromium （Cr），nickel（Ni）of the four edible fungus were determined by the atomic absorption spectroscopy method.The effects of two pre-treatment methods on the determination of heavy metal content were compared，and the pollution of heavy metals of four edible fungi was evaluated.The results showed that the contents of lead（Pb），cadmium （Cd），chromium （Cr），nickel（Ni）without significant difference in mushrooms，golden needle mushroom，oyster mushroom by microwave digestion method and dry ashing method，the significant differences of Cr content in the auricula was only found，and the standard deviation of the microwave digestion was between 0.002 5 and 0.388 9，while the dry ashing method standard error was between 0.002 8 and 0.582 5，and microwave digestion was preference in laboratories.Lead was 0.170 8 mg/kg to 0.827 5 mg/kg，admium was 0.047 0 mg/kg to 0.337 0 mg/kg，chromium was 0.151 0 mg/kg to 1.245 0 mg/kg，nickel was 0.582 5 mg/kg to 1.395 mg/kg，The total contents of heavy metals in auricula and oyster mushroom were higher，the Ni in oyster mushroom was the highest content，the contents of Cr were exceeding standard in oyster mushroom，golden needle and mushroom，mushroom，and the over standard rate of Cr were 126.8%，96.9%，89.2%respectively.However，the contents of Pb and Cd in samples were not exceeded.