A hard lump in the male breast is usually an abnormal physiological phenomenon, but some patients may mistakenly think they have a hard lump in their breast due to improper examination methods, which should be analyzed on a case-by-case basis. Usually, the main cause of breast lumps is male breast tissue hyperplasia, so it is recommended that patients go to a regular hospital for general surgery or breast surgery in a timely manner to improve the relevant hormone level examination. Generally, the benign and malignant nature of the hard nodules can be determined through ultrasound and mammography. If it is diagnosed as malignant tumor, surgery, radiotherapy, etc. should be carried out in time to avoid delaying the disease. In addition, some men may have self-perceived hard lumps in their breasts due to improper self-examination methods, which can be confirmed by professional doctors after palpation for abnormalities. If the patient has recently been overworked or has irregular work and rest, it can also lead to inflammation of the breast, which is manifested as a hard lump in the breast, and the symptoms can be improved after adjusting work and rest. Male patients also need to take better care of their breast tissue and eat more vitamin-rich foods that can help regulate the endocrine function to promote the health of the breast tissue.