Provided are a substrate for cartilage cultivation, which exhibits high safety and has a growth promoting effect on cartilage cells, and a method for cartilage regeneration treatment. The substrate for cartilage cultivation containing artificial collagen, in particular, an artificial collagen aqueous solution has a growth promoting effect on cartilage cells. A cartilage regeneration effect is obtained by the intraarticular injection of the substrate in and around a cartilage defect site.
