Breast fibroids in lobulated form are usually not malignant, but may be malignant when they grow fast, have unclear borders, and are not pushable. Specifically need to do pathology biopsy to clarify the benign and malignant. It is analyzed as follows: 1. benign: breast fibroma is a common benign tumor in women, mostly seen in young women. x-ray can be shown as lobulated or ovoid, if the fibroma has a long course of disease, slow lesions, clear boundaries, good mobility on palpation, and occasionally may be accompanied by pain, most of them are benign tumors. 2. Malignant: if the patient has a family history of breast fibroma, the fibroma grows fast, and the mobility is poor when touching, cannot be pushed, and the imaging examination finds that the peripheral boundary is not clear, and the tumor cells invade into the surrounding tissues, it is very likely to be a malignant tumor. It is recommended that patients initially diagnosed with breast fibroid try to undergo biopsy and puncture to clarify the nature of the tumor, and early surgical treatment. In addition, regular review of breast ultrasound and other examinations, to understand the development of the disease, to detect changes in the condition, early intervention and treatment.