Provided are: a food composition for improving cartilage function that is useful for preventing and treating various articular diseases； and a food or drink for improving cartilage function, a nutritious composition for improving cartilage function and a feed for improving cartilage function, each comprising the food composition for improving cartilage function.The food composition for improving cartilage function comprises as active ingredient(s) at least one ingredient selected from among lactose peroxidase, cystatin, an HMG-like protein and/or digestion products thereof. The food composition according to the present invention for improving cartilage function, which can be safely ingested on a daily basis over a long period of time and exerts a remarkable effect of remodeling or regenerating a deformed or lost cartilage, is useful for preventing or treating various articular diseases.
