The back of the head and neck pain appears mainly for 2 reasons: 1, due to the back of the head and the location of the neck, muscles, tendons, ligaments and other soft tissues continue to fatigue, such as frequent head down, ambling to read cell phones, reading computers, reading newspapers, or in the sitting position, the chair is relatively high, the table is relatively short, so it is easy to lead to long-term head down, the back of the neck position will appear strain. The head is in a forward leaning state due to the high pillow, and the muscles and soft tissues in the back will be in a state of continuous tension, which will lead to strain and inflammatory lesions, which will stimulate the peripheral nerves and cause pain. 2, due to the cold, the cold will lead to muscle tissue becoming more tense, and the arterial blood supply will decline, and the local energy and electrolyte supply will decrease. The inflammatory metabolites will further accumulate, leading to the formation of inflammatory edema, and the pain in the back of the neck will be more obvious.