The process of chondrogenesis in deer antlers is very similar to that of mammalian cartilage formation. Antlers can regenerate at an alarming rate (up to 2 cm per day). To meet the rapid growth of antlers, paracrine factors play an important role. These paracrine factors promote the proliferation and growth of chondrocytes, regulate cartilage development and modulate cartilage phenotype. The application of stem cell paracrine factors for the treatment of cartilage defects avoids the problems of immunocompatibility, tumorigenicity, embolization, and infection. This study demonstrates that ASC-CM can effectively repair cartilage defects using in vitro and in vivo methods, providing a suitable cell source and pathway for cartilage repair and providing ideas for mechanisms to promote cartilage regeneration.