Shoulder and neck nodules are localized masses or lumps that form in the shoulder and neck due to tissue cell injury and abnormal proliferation. In people who have strained for a long time or have been in one position for a long time, the muscles of the shoulder and neck continue to contract and stiffen, blood circulation is not smooth, lactic acid accumulates, subcutaneous fatty tissue metabolism is impaired, or bruises form masses, such as cortical adenoma, lipoma, etc., and the subcutaneous fibrous tissue develops abnormal hyperplasia to form masses. It may also be caused by infection of the lymph nodes by pathogens, causing redness, swelling, heat and pain; it may also be caused by long-term muscle strain or cervical spondylosis. Degenerative changes in the cervical discs compress the nerve roots and lead to long-term tension in the innervated muscles, which may result in aseptic inflammation in the shoulder and neck over time, leading to the formation of nodules. To prevent shoulder and neck nodules, we should pay attention not to work for a long time, and when the neck becomes sore, we should take proper rest and massage the stiff muscles to improve the blood circulation in the shoulder and neck.