Uterine fibroids are a common benign gynecological tumor, usually a consequence of the usual accumulation of long-term bad habits, prevalent in women aged 30-50 years. Uterine fibroids are formed by uterine smooth muscle cells and a small amount of muscle fiber tissue. First of all, if the diameter of the fibroid is below 4cm, the increase of fibroid may increase the chance of miscarriage and cause lower abdominal pain and other symptoms, timely consultation and observation, as long as it does not affect the fetus and the health of the pregnant woman, there is no need to worry too much about it, and there is no need for treatment of fibroids for the time being, and it is not recommended to remove the fibroids during pregnancy. Secondly, if the diameter of fibroids is larger than 4cm during pregnancy, fibroids may increase gradually with the increase of pregnancy, fibroid degeneration may occur during pregnancy, preterm labor, difficult labor, postpartum hemorrhage and other problems may occur during labor. If you want this baby, you have to be extra attentive, observe it for some time and make a timely decision when the risk is unavoidable. Furthermore, doctors usually do not recommend removing the fibroids during the delivery of the baby, and will usually wait for the fibroids to shrink before dealing with them after 6 weeks postpartum, because the process of delivery itself will result in a lot of blood loss, and if the fibroids are removed during this process, the risk is higher, and the bleeding may not be able to be stopped. If you have fibroids before pregnancy, it is best to go to the hospital for examination and decide whether to remove the fibroids or get pregnant first, depending on the size and location of the fibroids and the urgency of conception.