Knee pain is not a sign of calcium deficiency. The main cause of knee pain is an inflammation called osteoarthritis caused by the cartilage and osteochondral bone of the knee joint being worn down and irritated. This inflammation can lead to a vicious cycle of swelling and fluid buildup in the joint, further affecting movement. This osteoarthritis, the wear and tear of the articular cartilage in the knee joint and inappropriate exercise, such as excessive exercise, and unscientific forms of exercise, such as climbing, or walking up and down stairs, as well as significant obesity and overweight, may further increase the stress and wear on the joint. In addition, some trauma or cold, some people such as now riding electric bikes or motorcycles without attention to the protection of the knee joint, long-term stimulation by cold air can also cause knee joint damage, bringing knee pain. If knee pain occurs, you need to pay attention to the protection of the knee joint, a moderate amount of weight loss, reduce weight, reduce pressure, reduce the load. In addition, the form of exercise should be moderate and appropriate, and you should choose exercises that are relatively less damaging to the knee joint, such as swimming. In addition, if we go to the hospital and the doctor gives us the appropriate examination, such as an X-ray, and finds a specific lesion in the knee joint, we may be treated conservatively or surgically, depending on the lesion. The use of certain glucosamine drugs may have a nutritional effect on the cartilage of the joints and provide some protection to the joints.