Pain near the clavicle during inspiration may be related to the following reasons: 1. Injury to the clavicle and its surrounding tissues may occur. This is often seen when the patient suffers a direct violent blow or an impact to the shoulder joint on this side, which may cause a fracture of the clavicle or a contusion of the surrounding soft tissues. Such patients may pull on the injured area when inhaling deeply, coughing, sneezing, etc., which may lead to pain. 2. Pneumothorax may exist, which is often seen in patients with long-term lung disease, such as chronic obstructive pulmonary disease; or when doing acupuncture on the back and neck to puncture the relevant pleura, so that the negative pressure in the chest cavity disappears, resulting in pneumothorax, when the patient 3. This condition may be caused by pressure on the surrounding blood vessels and nerves, for example, if the patient has cervical ribs or other lesions that lead to thoracic outlet syndrome, it will lead to pressure on the blood vessels and nerves around the clavicle during deep inhalation and produce significant pain.