NOVELTY - A microbial sludge composition for degradation of chlorinated polycyclic aromatic hydrocarbons comprises Sphingomonas paucimobilis, Sphingosine Aeromonas (Sphingomonas aromaticivorans) and oligotrophic solution fungus (Cycloclasticus oligotro 2 phus) in a ratio of 1: 0.5-1.5: 0.5: 1.5.    USE - As microbial sludge composition for degradation of chlorinated polycyclic aromatic hydrocarbons (claimed).    ADVANTAGE - The sludge composition has improved effect for degradation of chlorinated polycyclic aromatic hydrocarbon and heterocyclic substance.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of microbial sludge composition for degradation of chlorinated polycyclic aromatic hydrocarbons involving 1) mixing polluted soil and oil sludge collected to obtain oily sludge, separating the impurity, shift to the sludge containing oil processing reaction bed, (2) adding composition to obtain microbial inoculum, microorganism in the composite microbial inoculum composition comprises 5-10 wt.% microbial inoculum, adding amount of oil content in microorganism microbial inoculum is 8-12 wt.%, and the composite microbial inoculum comprises: Pseudomonas aeruginosa, cinnamon Aeruginosa, Acinetobacter Ruffles, yellow class Nocardia coli and Streptomyces mixed yellow and green at ratio of 2-5:0.5-2:0.5-1.5:1-3:1.5-3.6, 3) analyzing content of nutrients nitrogen, phosphorus and microelement in oil-containing sludge, in the sludge containing oil according to nitrogen, and the content of phosphorus, adding urea and calcium superphosphate, where the ratio of carbon (C): nitrogen (N): phosphorus (P) in sludge containing oil is 75-100: 8-10: 3-1, (4) preparing micro-biodegradable agent of trace elements of the nutrition liquid: in the volumetric flask of 1000 ml, adding weighed: manganese sulfate (MnSO4) (3 g), iron sulfate (FeSO4), copper sulfate penta hydrate (CuSO4.5H2O) ( 2 g), cobalt chloride (CoCl2) (8 g), zinc chloride tetrahydrate (ZnCl2.4H2O) (8 g), boric acid (H3BO4) (8 g) and sodium molybdate (Na2MoO4) (8 g); dissolving the substance to 1000 ml volume capacity; packing in a plastic bottle, (5) adding micro-nutrient element according to each ton of sludge, adding amount of nutrient solution is 0.8-1.2 l, using clean water to dilute 3-5 times, in the oil sludge, stirring uniformity, (6) in summer every 3-4 days, spring and autumn every 5-6 days, ploughing 1 times; heating is installed at the bottom of the reaction bed, controlling reaction bed tube temperature at 25-35 degrees C; arranging the reaction bed round the tuomalin device, automatic spraying for every 3-5 days to watering, keeping oil sludge oil having sludge water content of 25-40%; during the treatment process, oily detecting 1 times per week of mud oil content, until the oil content is less than 0.5%.