The following diseases are common: first, rib fracture, often caused by trauma or violent blows, need to go to the hospital to check the chest X-ray, chest CT to clarify. Second, costochondritis, often due to upper respiratory tract infections combined with low resistance to cause, can be oral mild analgesic drugs, help relieve. Third, chest wall soft tissue or muscle injury, often due to strenuous activities or trauma, can be localized hot compresses and physiotherapy, help relieve symptoms. Fourth, skin or soft tissue infection, there will be mild local redness and swelling, sometimes even broken, need to enter the hospital to clarify. Fifth, lymphadenitis, often caused by bacterial or viral infection, requires regular medication. Sixth, for pregnant women, the possibility of paronychia cannot be excluded. In short, if the pain persists, you need to go to the hospital in time to clarify the cause.