Hard lumps in male breasts are an abnormal phenomenon, suggesting possible gynecomastia or breast cancer. Hard lumps in male breasts should be taken seriously and treated actively. First of all, some men do not do self-examination properly, which may lead to errors in palpation, so it is recommended to go to the hospital and be palpated by a professional doctor. Secondly, if there is indeed a hard lump in the breast, it often suggests abnormal breast tissue, including benign and malignant breast nodules. Therefore, male patients are advised to visit the general surgery department or breast surgery department as soon as they notice a hard lump in their breast. The nature of the breast nodule can be diagnosed and treated accordingly through professional breast physical examination, relevant hormone level examination, and imaging examinations, such as ultrasound and molybdenum target examination. If it is diagnosed as malignant tumor, timely surgical treatment, radiotherapy, etc. should be carried out to avoid delaying the condition. Men should pay attention to strengthen the care of breast tissue, eat more vitamin-rich food, which can help regulate the endocrine function, so as to maintain the health of breast tissue.