Deer tendon can strengthen tendons and bones, nourish blood and dredge collaterals, produce lean marrow, treat strain and continuous injury, strengthen bones and muscles, and replenish Yang Qi; It has obvious curative effect on rheumatism, joint pain, lumbago, fatigue or weakness of bones and muscles, difficulty in walking, weakness of hands and feet, cramps of hands and feet, traumatic injury and soreness of bones and muscles. Deer tendon is rich in collagen, which maintains the blood content of deer tendon during processing, thus strengthening the nourishing effect of deer tendon.