Seven PAH-degrading strains were isolated from PAHs-contaminated soil around an iron and steel company in Benxi using the enrichment procedure and tablet sublimation method.Their degradation ability of PAHs was studied in flasks with pyrene or benzo[a]pyrene as the single carbon source. The results showed that G1,G2 and G3 strains had stronger degradation ability for heavy PAHs. Further studies on the degradation ability of G1,G2,G3 and their mixture in PAHs-contaminated soil indicated that at 80 days,the t...