As the environmental protection situation becomes increasingly severe, the pressure to reduce nitrogen oxide (NO_X) emissions from flue gas in China's cement industry continues to grow, and the selective catalytic reduction (SCR) denitration technology has gradually become the mainstream emission reduction solution.However, the long-term lack of national and industry standards for low-temperature SCR denitrification catalysts in cement kilns has led to inconsistent product technical specifications and testing methods, severely hindering their application, promotion, and market standardization.The development of a series of standards for low-temperature flue gas denitrification catalysts for cement kilns has effectively filled the gap in the standard system for this field.This article introduces the research background, key technical indicators, development process, and main content of this series of standards, standardizing product specifications, technical requirements, testing methods, and chemical lifespan evaluation approaches. It provides a quantitative basis for the scientific selection of products, enabling enterprises to reduce NO_X emission concentrations below 50mg/m3, achieving both environmental and economic benefits. It has been successfully selected as one of the 2024 Ministry of Industry and Information Technology's Top 100 Group Standard Application Demonstration and Promotion Cases, holding significant strategic importance for industrial technological iteration and market standardization.