The study aims to investigate the second-hand luxury omni-channel trade business by reviewing global and Chinese literature and case studies. Through studying two successful industrial leaders (in the US and China) on their omni-channel strategy with a resource-based view (RBV) model, technology application and resource allocation (between online and offline channels as a whole omni-channel platform) are necessary for integration to secure supply chain. The seamless service, the authentication standardisation, and the lifestyle community are essential elements for omni-channel development. This study can help second-hand luxury business who is looking for an omni-channel integration or transformation to gather relevant insights for strategic considerations.