This book discusses on the Impact Mechanism of Carbon Tariffs and Carbon Labeling on Agri-trade and Emissions Reduction. Specifically, (1) it has analyzed the effect of carbon tariffs on Agri-trade and emissions reduction based on the hypothesis of carbon factor movement and the game theory, and built a Theoretical Model for carbon labeling to lead low-carbon behavior based on the international practices; (2) it simulated the impact of carbon tariffs on world's macro-economy and Agri-trade in China and worldwide using the Global Trade Analysis Project (GTAP) model; (3) it has made the first attempt to see the differences of willingness to pay for low-carbon products, purchasing behavior and expectations for government subsidies between consumers of different regions at different levels in China, by adopting questionnaire survey and scenario experiment; and (4) it has done an empirical analysis of carbon labels’ effect on low carbon consumption behavior based on Structural Equation Modeling (SEM) and experimental observation data with large samples. Finally, it has proposed policy recommendations based on the findings of the above theoretic and empirical studies.