Hard lumps in the paratesticular breasts and pain when pressed are commonly caused by breastfeeding women’s accumulation of breast milk or breast hyperplasia, breast tumors, etc. The details are as follows: 1. Breastfeeding women’s accumulation of breast milk caused by the paratesticular breasts have normal breast tissues, just due to the fact that the mammary glands are not completely degraded, breastfeeding paratesticular breasts will have normal milk production, but because there is no discharge channel, the breast milk can not be discharged from the body, the more the milk accumulates in the paratesticular breasts, the more the breast milk can be formed, and the female will Women may experience pain or swelling in the area of the breasts. This situation can be relieved by local hot compresses and physiotherapy, if the symptoms cannot be relieved after the above treatment, surgery can be considered if necessary; 2. If this situation does not occur during the breastfeeding period, breast hyperplasia, breast tumor, etc., the patient needs to go to the hospital as soon as possible, check the paratesticular breast ultrasound to clarify the diagnosis and the next step of surgical treatment.