Carbon Guardian is an information tool program that combines the Internet with low-carbon life, which aims to promote people's green and low-carbon production and lifestyle. Let every user understand and learn the knowledge and news reports related to double carbon through the small program, and be able to use the carbon emission calculator and emission factor database function in the small program to understand their own carbon emissions, thus helping China to realize the goal of double carbon policy as soon as possible. The "home page" of the small program can view news reports related to double carbon, conduct special study on carbon peak and carbon neutral topics, and consolidate knowledge through answering questions. The carbon emission "calculator" page is divided into five modules: clothing, food, housing, transportation and use. after inputting information, the amount of carbon dioxide emitted in daily life can be calculated and whether it exceeds the standard can be prompted; on the "Exploration Data" page, you can search for specific product carbon data values included in the carbon emission factor database. On the "My" page, you can learn about carbon footprint knowledge, view daily posters, help center and about us.