Multiple breast fibroids are commonly seen in young women aged 18 to 35 years, and a younger age of onset is one of the characteristics of this disease. The occurrence of multiple breast fibroids is closely related to estrogen stimulation and is therefore rare before menarche or after menopause. What is multiple breast fibroids? It is a condition in which there are more than two fibroadenomas in the breast, and it occurs in about 15% of cases. Multiple breast fibroids tend to occur in the outer quadrant of the breast, with about 75% being solitary and a few being multiple. Other than the presence of a lump, the patient usually has no significant primary symptoms. The lump is slow to increase in size, and when palpated, it is firm, well-defined, smooth and easy to push. The menstrual cycle has no effect on the size of the lump. The diagnosis of multiple breast fibroids requires two tests: firstly, X-ray mammography: the edges of the lump are clear and smooth, and the lump shows uniformity. The second is biopsy: the fibroma has an outer envelope, is hard, and has a grayish-white cut surface with light and many unevenly arranged fissures visible to the naked eye. Multiple breast fibroids are recurrent, but the diagnosis of recurrence can be confirmed if the following three conditions are met: 1. Tumors are detected again within 1 cm of the original incision after surgery; 2. Tumors are found again at the original surgical site during the follow-up examination within 26 months after surgery; 3. The pathological types of the first and second examinations are the same, or the results of the first examination cannot explain the nature of the lump, while the results of the second examination are breast fibroids. The second examination result is breast fibroadenoma. The chance of malignant change of multiple breast fibroids is very low. If malignancy occurs, it is common in patients who are pregnant and breastfeeding, or in patients who are older and have a longer history of the disease. Therefore, there is no need to worry too much about this. Treatment is based on minimally invasive breast surgery, which is minimally invasive and aesthetically pleasing.