There are three main causes of rib pain next to the chest: 1. trauma to the chest, such as a violent impact that can easily result in a rib fracture, which can cause pain due to damage to the small nerves; in addition, local bruising and swelling and inflammatory edema can form, which can stimulate the peripheral nerves and cause pain. 2. costal chondritis, which is mainly due to sustained strain or strain on the soft tissue attachment points around the rib cage. The inflammatory metabolites also stimulate the peripheral nerves and cause painful sensations. 3, Intercostal muscles in the periphery of the rib cage are subject to strain and cold, resulting in local inflammatory lesions and accumulation of inflammatory metabolites, which can easily lead to inflammatory edema and stimulation of the surrounding tissues and structures. The blood circulation slows down and inflammation further accumulates, resulting in a more pronounced pain sensation.