Precautions after sodium vitrate injection include observing local reactions, avoiding excessive joint movement, and protective aspects of the injection site. Sodium vitrate lubricates the joints and protects the articular cartilage. The following precautions should be taken after sodium vitrate injection: 1. Observe the local reaction: After injecting sodium vitrate, you should pay attention to observe whether there is any local allergic and inflammatory reaction, if there is swelling and increased fluid, you should stop the injection. If there is no abnormality, you can walk normally. 2. Avoid excessive activity of joints: After injecting sodium vitrate, the knee joint should be flexed and extended appropriately, which is conducive to the even distribution of the drug in the joint cavity. However, avoid excessive activities, such as cycling, going up and down stairs, squatting or prolonged standing, squatting, so as not to aggravate the condition. 3. Protection of injection site: avoid local infection after sodium vitrate injection, no swimming, bathing and other activities before the healing of the needle eye. Secondly, avoid cold, pay attention to warmth, is conducive to the better integration of drugs and joint cavity, so that the drug effect to maximize. Sodium vitrate reasonable use generally does not appear obvious adverse reactions. If there is discomfort after playing sodium vitrate timely medical treatment, targeted treatment under the guidance of the doctor, not self-medication treatment.