Chronic Suppurative Hidradenitis is an apocrine glands inflammation present in the skin adnexa over theaxillary, anogenital and perineal region. It occurs due to obstruction and inflammation of the draining duct with sinus formation .Obligate anaerobes contribute to mixed skin flora and they are known to causepolymicrobial synergistic infection along with facultative anaerobes. Obligateanaerobes usually cause deep seated necrotic infection with foul smelling discharge. Here is a case of an unmarried women presenting with a lump in the breast with a foul smelling discharge since 2 years. A final diagnosis of Chronic suppurativehidradenitis was made and treated with localised surgical excision and antibiotics. An aspirated pus was sent for aerobic and anaerobic culture which revealed polymicrobial obligate anaerobic infection due to Peptostreptococcusspp, Fusobacteriumspp, Prevotellamelaninogenica and Eubacteriumspp grown in synergism with aerobic Pseudomonas aeruginosa. Patient recovered and no recurrence has been seen as of now. Hence it is an unusual case of chronic suppurativehidradenitis with superficial degenerative infection caused by Polymicrobial obligate anaerobes.