Hard lumps and pus on the chest of men may be related to trauma, folliculitis, boils, lipoma and other conditions. 1. Trauma: If men’s chest is traumatized, such as cut or collision, and then infected by bacteria or germs, it will cause local redness, swelling, ulceration and pus, and there will also be redness, swelling and pain. 2. Folliculitis: If the hard lumps on the chest are small, the hair follicles on the chest may be infected, causing folliculitis, which manifests itself as red, swollen and hard lumps on the hair follicles, and in severe cases, the tips of the hair follicles will burst, and there will be pus secretions. 3. Boil: This is related to Staphylococcus aureus infection, which is a raised hard lump, if the epidermis of the hard lump is ruptured, it will cause infection. 4. Lipoma: If the patient has a lipoma, the lipoma is infected, which can also cause local pain, rupture and pus. It is recommended that men go to the general surgery department in time, do systematic examination, and strictly follow the doctor’s instructions to deal with the treatment.