Pseudomonas fluorescens capable of degrading estrogen substances is named as SJTE-2, and a preservation number is CGMCC No.6587. The pseudomonas fluorescens can use natural estrogen or environmental estrogen as the only carbon source to grow and can degrade estrogen substance oestrone, 17-Beta-estradiol, estriol and polycyclic aromatic hydrocarbon substance naphthalene, luxuriant, bisphenol A, and can be used for decomposing and removing an estrogen substance and a polycyclic aromatic hydrocarbon substance in an environment. Under the culture condition that the estrogen or the polycyclic aromatic hydrocarbon is used as the only carbon source, a bacterial strain SJTE-2 can degrade oestrone, 17-beta-estradiol and estriol within 24 hours, wherein the initial concentration of the oestrone, 17-beta-estradiol and estriol is 1 mg/L, and degradation rate of naphthalene, luxuriant and bisphenol A is over 90%, wherein the concentration of the naphthalene, luxuriant and bisphenol A is 50 mg/L. The bacterial strain can degrade oestrone, 17-beta-estradiol and estriol for more than 90% in 7 days, wherein the initial concentration of oestrone, 17-beta-estradiol and estriol is 50 mg/L, and degradation rate of naphthalene, luxuriant and bisphenol A is larger than 80%, wherein the concentration of naphthalene, luxuriant and bisphenol A is 500 mg/L.