Fibroids that grow into the uterine cavity and protrude into the uterine cavity with only the mucous membrane covering the surface are called submucosal fibroids. Submucosal fibroids are a relatively rare type of uterine fibroid, accounting for about 10-15% of fibroids. Its effect on patients is related to the location and size of its growth. 1. If the submucosal fibroids located in the uterine cavity are small in size, they usually do not show obvious symptoms. 2. If the submucosal fibroids located in the uterine cavity are large, they increase the size of the uterine cavity, increase the area of the endometrium, affect the contraction of the uterus, and compress the veins near the fibroids, causing abnormal uterine bleeding, the most common symptoms being dysmenorrhea, increased menstrual flow, prolonged periods or dripping. Long-term abnormal uterine bleeding can be secondary to anemia, resulting in pallor, weakness, and palpitations, which can affect daily life. If the submucosal fibroid is accompanied by necrotic infection, irregular vaginal bleeding or purulent leucorrhea may occur. 3. If the submucosal myoma is located in the cervix, or the volume of myoma in the uterine cavity is too large, the myoma may come out of the cervix and protrude into the vagina, which may cause long-term friction with the outside world and break down and become infected, and bloody or purulent discharge may appear. In addition, submucosal fibroids can affect the fertilization of eggs and may cause infertility. Larger submucosal fibroids may deform the uterine cavity or cause miscarriage due to insufficient blood supply to the endometrium. If there is no abnormal vaginal bleeding or other obvious symptoms, submucosal fibroids can be left untreated and observed temporarily, with ultrasound review every 3-6 months. If the submucosal fibroids are large or if there are symptoms that affect fertility and life, it is necessary to go to the hospital in time for further treatment.