The right subclavian pain may be caused by physical factors such as exercise and exertion, but it is also necessary to be alert to the possibility that it may be caused by costochondritis, clavicle trauma, lung tissue disease and other diseases. 1. costochondritis: this disease is a kind of sterile inflammation, mainly occurs in the anterior chest part of the 2nd-4th rib cartilage parts, belongs to the self-limiting disease, manifested as subclavian hidden pain. 2. Trauma to the clavicle: due to the accidental fall during running and sports, the hand supports the ground or directly injures the right side of the clavicle, which sometimes results in the fracture of the right clavicle or the dislocation of the right acromioclavicular joint and so on, and all of them will cause the pain under the right clavicle. 3. Lung tissue diseases: Occupational lesions occurring in the lungs, lesions located in the upper lobe of the right lung, apical tumors can easily involve the parietal of the pleura, and the patient will have pain under the right clavicle. Right subclavian pain can be caused by other diseases, and it is recommended that patients go to the hospital in time, under the guidance of the doctor to carry out relevant examinations and standardized treatment.