The back feels tight, there may be the following conditions. First, the most common is prolonged head-down work or heavy physical labor, resulting in muscle strain and inflammation of the muscles in the thoracic and lumbar back. The muscle strain will be weakened, the muscle fiber scarring changes, may also appear stripe-like changes, the patient will feel the back muscle tension, flexion and extension activities will be limited, and sometimes may also be manifested as pain. The best treatment for this condition is to avoid prolonged low work, strengthen the functional exercise of the muscles of the low back, but also with massage or hot compress treatment, if necessary, you can choose myorelaxants symptomatic treatment. Secondly, the muscle spasm may be caused by internal lesions, resulting in a feeling of tightness. Internal lesions include tumors, tuberculosis or infectious lesions, which should be further examined before choosing the appropriate treatment measures.