Girls have hard lumps in the chest, often due to the following reasons: First, breast hyperplasia: women in the process of growth and development, the mammary glands will have hyperplasia, if the hyperplasia is more serious, you can touch the hard lumps, you can go to the hospital’s general surgery or breast surgery to make it clear, usually need to check the breast color ultrasound, breast molybdenum target. If the disease, do not worry too much, go to the hospital regularly for review. If there is obvious pain, you can take oral medication for treatment, such as breast fetish elimination, free pills and so on. Second, benign breast growths: for example, fibroid tumors, you can check the breast ultrasound to make it clear. Third, malignant tumor of breast: for example, breast cancer, need to perform puncture biopsy or excision biopsy of the mass to clarify the nature. If the disease, need to perform radical resection of the tumor, coupled with lymphatic cleansing.