Global Navigation Satellite System Reflectometry (GNSS−R) technology provides high−frequency sampling and good spatial resolution through its all−weather, all−day, and global coverage characteristics, which substantially improves the spatiotemporal monitoring of Earth's surface. This paper provides a detailed analysis of the current status of GNSS−R technology in China. It addresses existing challenges such as inconsistent spatial planning standards, fragmented remote sensing data governance, and insufficient policy support for industrial applications. Based on the EU Copernicus program's data−sharing framework and the U.S. commercial space sector's development experience, the study proposes a "four−in−one" governance strategy for advancing China's GNSS−R technology. The proposed framework includes building a national GNSS−R data platform, leading the formulation of international GNSS−R standards, fostering an integrated space−ground application ecosystem, and promoting the commercialization of GNSS−R. This strategy aims to provide a systematic path for the development of China's GNSS−R technology. These stragetic suggesting not only support China's transition from a GNSS−R technology leader to a rule−maker but also provide valuable reference for enhancing China's role and discourse power in the global space governance system and application domains.