Preterm birth is a complex cluster of problems , it results insignificant health consequences to the infant and emotional andeconomic costs for families and communities. Although advances inperinatal and neonatal care have improved the survival for preterminfants, those infants who do survive have a greater risk ofdevelopmental disabilities, health, and growth problems than infantsborn at full term. Whereas the group of infants with the greatest riskof morbidity and mortality comprises those born at less than ٣٢weeks of gestation, infants born between ٣٢ and ٣٦ weeks representthe greatest number of infants born preterm. The latter group ofinfants also experiences a greater risk for health and developmentalproblems compared with the risk for infants born at term.To date, no single test or sequence of assessment measures thatmay accurately predict preterm birth are available, and efforts at theprevention of preterm birth have primarily focused on the treatmentof women with symptomatic preterm labor.The main tools that play an important role in the management ofpreterm labor are tocolytic therapy, antibiotics and corticosteroids.