Sphingomonas paucimobilis represents an aerobic Gram-negative bacillus that is gaining recognition as an important human pathogen. These species are widely distributed in both natural environment and hospitals. They appear as opportunistic pathogen that take advantage of underlying conditions and diseases. Regardless of the clinical significance, pathogenic mechanism varies throughout current bibliography. Aim of our study, reflects presentation of a rare case of an out-patient clinical asymptomatic, with vaginal culture positive for this rare microorganism, S. paucimobilis. Assiduous diagnosis and therapeutic mapping consist necessary conditions of effective treatment.