Cartilage protection joints need a balanced diet, can be appropriate to supplement the higher protein, calcium, lean meat, fish, shrimp and so on. Cartilage protection of joints first need to avoid re-injury of articular cartilage, such as rest, braking and the necessary functional exercise, dietary nutrients should be balanced, not partiality, can be appropriate to increase the protein, calcium high lean meat, fish, shrimp, etc.. If only pursuing supplemental nutrition and ignoring rest, braking and necessary functional exercise may aggravate the condition. Joints and cartilage injuries should go to regular hospitals in time, and doctors should determine the specific cause of the disease according to the symptoms, signs and auxiliary examinations, and give the correct treatment for the cause in order to recover in time.