Background: Preterm birth can cause immediate fetal complications like apnoea of prematurity, respiratory distress syndrome (RDS), intraventricular hemorrhage (IVH), necrotizing enterocolitis (NEC), neonatal sepsis. The present study was conducted to assess comparison of the predictive value of transvaginal cervical length between 11 to 14 weeks and 20 to 22 weeks of gestation in preterm labour. Materials & Methods: The present study was conducted on 100 subjects in the postgraduate department of Obstetrics and Gynaecology and department of Radiodiagnosis and Imaging in SMGS Hospital, Government Medical College, Jammu. Cervical length was measured using transvaginal ultrasonography. Results: At 11 to 14 weeks gestation, the maximum number of participants (59%) had cervical length in the range of 3.6 cm to 4 cm with the minimum cervical length being 3 cm and maximum cervical length being 4.8 cm. 7 % of women who delivered preterm had cervical length ranges between 3.6 to 4 cm, whereas 52% of women had term delivery with same cervical length. 6% of women who delivered preterm had cervical length between 3.1 to 3.5 cm and 7% of women who delivered term also had cervical length between 3.1 to 3.5 cm. When we correlate the cervical length at 20-22 weeks in relation to preterm and term delivery, 9% of women who delivered preterm had cervical length ranges between 2.6 cm to 3 cm whereas only 2% of women delivered at term with same cervical length. Conclusion: Results from our study suggest that assessment of cervical length during the second trimester is useful in identifying women who are likely to have premature births and who may benefit from treatments such as vaginal progesterone and cervical circlage.