Abstract: As an emerging means of surface environmental monitoring, the GNSS-IR (GNSS interferometric reflectometry) technology plays a crucial role in enhancing the efficiency of water resources management in China and ensuring the accuracy and timeliness of water level monitoring. Currently, there is a lack of unified standards to regulate the relevant technical methods, operation processes, and application of achievements. This paper focuses on exploring the potential needs for the standard of GNSS-IR water level change monitoring. Through systematic collection and in-depth analysis of 69 highly relevant literatures, it conducts classified statistics and collation of the involved water body types, monitoring equipment, band characteristics, evaluation indicators, etc. This paper deeply analyzes the current standard situation of GNSS-IR at home and abroad, and systematically studies the construction framework of the technical standard system of GNSS-IR in China. The aim is to provide a reference for the standardization construction and promotion of GNSS-IR technology in China, and further improve the application level and industry influence of China in this technical field.