Whether the ovarian cysts detected during pregnancy should be observed or treated surgically depends on the size of the cysts, the number of days of pregnancy, the condition of the pregnant woman and other factors. Check out the ovarian cyst is relatively small, the diameter of the cyst will be <5cm, and in the 12 weeks of pregnancy, you can consider conservative treatment, observation first not to deal with. After the 12th week of pregnancy, if the cyst becomes bigger and its diameter exceeds 8cm, or if the ovarian cyst tip is twisted or ruptured during pregnancy, surgery should be carried out in time. In some cases, ovarian cysts are found in the late stages of pregnancy, and if the cysts are relatively large and not yet abnormal, they can wait until the delivery of the fetus, and then the fetus can be taken out by caesarean section while the ovarian cyst is removed by surgery.