BACKGROUND To evaluate the quality of malaria prevention during prenatal consultations, this study was carried out in Niakhar, one sub-prefecture of the Fatick region. METHODS It was a matter of a descriptive transverse study, based on the listens and the observation of 60 prenatal consultations carried out within three health posts. The studied variables were related to the criteria of a good quality of prophylaxis at three levels: questioning, examination, and attitude after consultation. RESULTS Questioning was centred by frequency order on: the pregnancy antecedents (65%), the chloroquine direction for use (34.3%), the fever notion (6%), and the chloroquine secondary effects (3%). During the physical examination, all the providers looked for clinical signs of weakens, blood pressure, and presence of oedemas of the legs; but the temperature was taken only in 8.6% of the cases. At the end of the consultation, the chemoprophylaxis prescription and the next consultation appointment were systematic; the duration of the treatment recalled in 57% and malaria seriousness during the pregnancy in 3% of the cases; no one of the providers didn't evoked neither the methods of the treatment nor the attitude to hold in case of fever. CONCLUSIONS The prevention of the malaria in pregnancy through the CPN necessitates a fitting formation supported by regular supervision of the health posts.