Ovarian cysts are lumps that develop inside or on the surface of the ovaries. Patients with ovarian cysts usually have symptoms such as increased leucorrhea, abdominal pain, frequent urination, back pain, weakness, and menstrual disorders. The factors of ovarian cysts may be related to environmental and lifestyle, endocrine, and genetic factors. In addition, contamination of food and women’s abuse of hormone-containing drugs, such as breast enhancement, weight loss, and health products to slow down aging, can lead to ovarian cysts. Whether ovarian cysts can affect pregnancy depends on the size of the ovarian cysts. Ovarian cysts are usually benign diseases and generally do not affect pregnancy as long as they are not too large and do not affect ovulation. However, if the ovarian cyst is relatively large, for example, the maximum diameter is greater than 5 cm, there is a risk of ovarian cyst tip torsion, which may lead to clinical signs of acute abdomen, and there is also a risk that the ovarian cyst may be too large and affect ovulation or compress the fallopian tubes, which may affect pregnancy. However, patients with ovarian cysts are not infertile, and after treatment, they can usually become pregnant. If the ovarian cysts are large, patients are advised to undergo medication or surgery in a timely manner to avoid affecting their reproductive function.