If a lump moves when you feel it in your breast, you can consider several situations: first of all, benign tumors, such as breast fibroadenoma, are more common in young women, mostly single, with slow growth, tough texture and good mobility, which can be found to move on palpation. Malignant tumors cannot be ruled out either. Early on, there may be no obvious symptoms, but small painless solitary lumps can be found, which are hard and not smooth on the surface, not easily demarcated from the surrounding tissues, and not easily movable in the breast, and can be initially judged by ultrasound examination, and eventually pathological examination is the gold standard. The breast lumps can also be found in cystic hyperplasia, accompanied by breast swelling and pain, which can become cyclical and related to the menstrual cycle, mostly seen in middle-aged women, and this situation is observed with symptomatic treatment.