Objective:To explore the relevant influencing factors of adverse pregnancy outcomes in pregnancies complicated with uterine fibroids.Methods:A total of 128 patients with pregnancy complicated with uterine fibroids were selected as the research sub-jects.Based on the occurrence of adverse pregnancy outcomes,they were divided into an adverse pregnancy outcome group(n=50)and a non-adverse pregnancy outcome group(n=78).Univariate and multivariate Logistic regression analyses were conducted to ana-lyze the relevant influencing factors of adverse pregnancy outcomes in pregnant women with uterine fibroids.Results:Among 128 cases of pregnancy complicated with uterine fibroids,50 cases had adverse pregnancy outcomes,accounting for 39.0%.Univariate analysis showed that there were statistically significant differences between the adverse pregnancy outcome group and the non-adverse pregnancy outcome group in terms of gestational week at delivery,age,number of deliveries,history of cesarean section,cesarean section rate,and uterine fibroid diameter≥7 cm(P<0.05).Multivariate Logistic regression analysis indicated that a uterine fibroid diameter≥7 cm(OR=0.333,95%CI=0.126～0.882,P=0.027)and a low cesarean section rate(OR=7.324,95%CI=2.153～24.918,P=0.001)were risk factors for adverse pregnancy outcomes in patients with pregnancy complicated by uterine fibroids.Conclusion:Larger uterine fibroids are a risk factor for adverse pregnancy outcomes.Clinically,it is important to strengthen prenatal care and monitoring of risk factors in patients with uterine fibroids to prevent adverse pregnancy outcomes in pregnant women.