Menstrual breast pain is considered to be caused by two factors. First, the patient experiences breast pain during menstruation due to the stimulation of estrogen and progesterone secretion before the onset of menstruation. The pain symptoms may be more pronounced before menstruation and can be alleviated after menstruation. Second, if the patient's symptoms are severe, it is generally necessary to consider whether the pain is caused by mammary gland hyperplasia. Mammary gland hyperplasia can be caused by long-term staying up late, depression, and excessive stress. It is recommended that the patient undergoes a breast ultrasound to check for conditions like mammary ductal hyperplasia or fibroadenomas, and then receive targeted treatment.