Male patients who present with hard lumps in the chest can be seen with the following diseases: First, men with breast development and mastopexy can present with localized hard lumps. Some patients may also present with regular pain, which needs to be further combined with a color ultrasound examination of the breast, and can be followed up and observed temporarily. If necessary, medication or surgery can also be chosen. Second, some patients are due to chest wall diseases, such as chest wall tuberculosis. Patients should have a history of tuberculosis infection and have significant localized pain, or signs of inflammatory changes. There are also some patients who will have significant loss of appetite, weakness, hypothermia, and wasting, and if necessary, they will need to opt for surgical excision and systematic anti-tuberculosis treatment. Third, benign tumors of the chest wall commonly occur, mainly fibroids and lipomas, which can be surgically removed if necessary.