Glucosamine hydrochloride capsules are relatively effective drugs for the treatment of osteoarthritis and are mainly used for the treatment and prevention of osteoarthritis in larger joints such as the hip and knee joints. Glucosamine hydrochloride capsules can act on the cartilage surface of the limb, which can inhibit the destruction of the cartilage surface and also enhance the synthesis of cartilage, which can reduce the sterile inflammation of the cartilage surface. In addition, it can reduce the damage and destruction of the cartilage surface by inflammation, and it can also improve the viscosity of synovial fluid within the joint, thus further protecting the joint.