A rbuscular mycorrhiza(AM) is a kind of mycorhiza,most extensively distributed in nature and very common in polluted soils of various types,such as heavy metal contaminated soils,organic contaminated soils,and combined pollutant contaminated soils.It has been demonstrated that AM fungi contribute to quality safety of farm products produced in contaminated soils through 1) promoting degradation and transformation of organic pollutants,thus reducing their residues in the soil and farm products therefrom;2) enhancing crop tolerance to heavy metals,thus inhibiting its accumulation in farm products;3) improving crop nutrition,thus strengthening cropresistance to disease,thus calling for less fertilizers and pesticides and hence leaving less residues in the soil and farm products therefrom.So the potential of AM fungi in improving quality safety of farm products is significant.In the years to come,more efforts should be devoted in the following fields:1) screen and domesticate AM fungal strains that are capable of reducing residues of pollutants in farm products;2) explore effects and mechanisms of AM fungi improving quality safety of farm products;3) prove up interaction between AM fungi and other biofertilizers and biopesticides;and 4) conduct basic research on app lication of AM fungi in farming production.