In a pot experiment, effects were investigated of inoculation with arbuscular mycorrhizal fungi isolated from soil of a mining area on root colonization and plant biomass, Cd uptake and distribution of marigold (Tagetes erecta L.) growing in soils applied with Cd at different rates (0, 20, 50 mg kg^-1). Results indicate that inoculation of the fungi significantly increased their root colonization and biomass of marigold plants. Plant Cd concentrations and uptake markedly increased with increasing Cd addition levels. For all the treatments, Cd contents were significantly higher in shoots than in roots, while with the same rate of Cd added Cd content was higher in the shoots of inoculated plants than of uninoculated control. Especially, in Treatment 20 mg kg^-1, the ratio of Cd content in shoot to that in root of inoculated plants was 3.90, while in control it was only 2.33. In general, inoculation with arbuscular mycorrhizal fungi isolated from contaminated soil AMF increases Cd uptake in plants and enhances Cd translocation from roots to shoots, showing a promise in Cd phytoextraction.