A hard lump in the right breast of men and painful to press is considered the following possibilities: First. It may be because of male breast hyperplasia, men do have mammary glands, but they do not develop, when there is breast hyperplasia male breasts will have hard lumps inside, touching a painful sensation, temper is also more irritable, the situation is serious is a stabbing pain in the chest. Secondly, it may be that men are in the developmental stage of puberty. The estrogen produced in men’s bodies after they enter puberty will stimulate breast cells to multiply and form hard lumps in the breasts, which will be painful to touch and will disappear automatically after a period of time. Then, it may be because of breast infection, breast fibroids and a series of other breast diseases, once this symptom appears best to go to the hospital breast department to confirm the diagnosis, according to the results of the examination for treatment, if the situation is more serious, if necessary to take surgery to remove.