Submucosal fibroids are not necessarily malignant and most are still benign. A submucosal fibroid is a benign tumor that protrudes into the normal cavity of the uterus and is usually asymptomatic. If the fibroid is large, it may cause symptoms such as increased menstrual flow, prolonged periods, and lower abdominal pain. Generally speaking, the reasons for the formation of submucosal fibroids are complicated, which may be related to genetic factors, local elevated estrogen levels, or the long-term multiple abortions, scraping, multiple deliveries, etc., which cause damage to the muscle fibers of the uterine corpus, leading to the emergence of submucosal fibroids. If submucosal fibroids are found, it is recommended to consider the patient’s age, clinical manifestations, fertility requirements, and the size and number of tumors. Once the symptoms are more serious, it is recommended to seek medical treatment in time and under the guidance of professional doctors.