This study uncovers the cooperative and opposing effects of CD24 and RCC2 on tumor metastasis. CD24 regulates RCC2 through ubiquitination and degradation, and their interaction influences the β-catenin signaling pathway. RCC2 suppresses tumor metastasis by promoting cytoskeletal reorganization and degrading Vimentin, providing a deeper understanding of the molecular mechanisms underlying prostate cancer metastasis.