To explore the clinical significance of the cervical length (CVL) measured by ultrasound on the induction time, pregnancy outcomes, and delivery mode before labor induction in term pregnancy of pregnant women with scarred uterus. Methods: 120 scarred uterus pregnant women without sign in labor who wanted labor induction during the 3940th gestational weeks were selected and were given CVL measured by ultrasound and cervical Bishop score evaluated. The women with CVL≤2.8cm were in group A, and the women with CVL＞2.8cm were in group B. And the women with Bishop score >6 points were given routine oxytocin induced labor, and the women with Bishop score ≤6 points were given promoted cervical ripening by Foley catheter balloon before oxytocin induced labor. The effect of induced labor and delivery mode of all included women were observed. Results: The cervical Bishop score, and the success rate of induced labor of women in group A was 6.03±1.05 points and 86.8%, which were significant higher than those (4.07±1.53 points and 62.2%) of women in group B, but the time from induction to delivery and the rate of conversion to cesarean section of women in group A were 20.4±9.5 h and 19.7%, which were significant lower. The rate of near to give birth within 48 hours of women with Bishop score >6 points in group A was 85.2%, which was significant higher than that (53.3%) of women in group B. Conclusion: The cervical length measured by ultrasonic score of pregnant women with scarred uterus in term pregnancy before labor induction has some certain clinical significance for guiding the induction time, induction outcomes, and delivery mode, which combined with cervical Bishop for guiding vaginal delivery is better.