In recent years, environmental issues have become an international focus, under the influence of global climate change, greenhouse effect is becoming more severe with each passing day. Therefore, it is urgent to control greenhouse gas emissions and improve the quality of the ecological environment by reducing carbon emissions. However, in the context of the current low-carbon economy, the environmental costs of enterprises are bound to rise, which will inevitably have a more serious impact on enterprises and the national economy. This article will mainly focus on how low carbon economy policies affect a country's international trade over a given period of time based on a concrete example. Regarding the methodology, chose the object to be India's carbon related data which are carbon intensity, carbon emission and carbon price in the period 1990-2020. And mainly based on the regression model using excel. The results of the study show that the Carbon Intensity and Carbon emissions are positively correlated with International Trade while the Carbon Price is negatively correlated. The volume of Indias International Trade will grow steadily as it moves towards Low-Carbon Economy policy. In summary, moving towards low carbon economy can increase the sustainability of international trade and reduce trade risks, while also creating more trade opportunities for countries, especially in the areas of environmental protection.