It is not uncommon for cervical spondylosis to cause intractable breast pain, called “cervical breast pain”, due to cervical degeneration caused by sleep malposition, long-term strain or external pulling injury, which compresses and stimulates the cervical nerve roots, resulting in spasm, edema and degeneration of the nearby soft tissues and chronic breast pain. Medical experts have long confirmed that cervical spine degeneration as well as thoracic outlet syndrome can cause intractable breast pain, mostly chronic, and the degree of pain is often related to the location of the neck and proportional to other cervical nerve root symptoms, mostly unilateral breast pain. Patients may start to feel intermittent vague or stabbing pain in one breast or pectoralis major muscle, most pronounced when turning the head to one side, and sometimes the pain is unbearable. In addition to breast pain, there is also pain and discomfort in the neck, occiput, shoulder and arm. There are often signs of degenerative changes on X-ray, such as bone spurs, narrowing of the spinal space, etc. The 6th and 7th cervical vertebrae are most commonly involved, while there are no abnormal findings on electrocardiogram, chest X-ray or the breast itself. It is because breast pain caused by cervical spondylosis is easily confused with breast disease, angina pectoris and pleurisy, so the misdiagnosis rate is also relatively high. The high prevalence of cervical breast pain includes female teachers who work long hours, female workers who carry weight on their shoulders for a long time, and female athletes who are vulnerable to external injuries.