Tightness in the back can be caused by aseptic inflammation, or it can be caused by cervical spondylosis. 1. Aseptic inflammation: tightness of the back is also known as myofascial spasm, the back has the trapezius muscle, scapularis muscle, latissimus dorsi muscle and other muscle groups exist, long-term strain or cold and other factors under the stimulus, may cause myofascial aseptic inflammation, resulting in local blood flow obstacles, metabolites accumulation and other changes, the appearance of the back of the myofascial pain, spasticity of the symptoms. 2. Cervical spondylosis: Cervical spondylosis may lead to fatigue compensation of the myofascia of the neck and shoulder area above the back, and it may also cause the narrowing of the vertebral body gap, the cervical intervertebral discs moving back and other pathologic changes, which may lead to the nerve innervating the back area to be compressed, and it will cause sensory and motor abnormalities in the back area, and the symptoms mentioned above may also appear. Sometimes, the cause of back tightness cannot be accurately determined by the symptoms alone, and it needs to be combined with the characteristics of the medical history and other examination results to make an accurate judgment, and it is recommended that the cause of the disease be clarified under the guidance of a doctor and targeted treatment.