All countries and major companies in the world are actively promoting the landing of new energy vehicles. Without the support of the government, the whole market prospect of an emerging industry will be bleak. At present, all countries in the world are actively promoting the landing of new energy vehicles for various reasons and have formulated relevant policies.

Globally, Europe's fuel economy indicators and carbon emission standards have the greatest impact and the highest environmental protection requirements. With regard to carbon emission standards, mainstream countries and regions include Europe, the United States, China, Japan and South Korea. The most stringent requirement for carbon emission standards in 2005 was 160g/km proposed by Europe. In 2020, this standard is also 96.6km/g proposed by Europe. The current energy and engine thermal efficiency are contrary to the downward trend of carbon emission standards, and have reached a bottleneck period, which is also an important reason for the frequent policies of various countries to promote new energy electric vehicles.

China mainly manages the carbon emissions of cars produced by enterprises through the double-point policy, which is called "CAFC" and "NEV". The former mainly focuses on fuel economy, while the latter mainly limits the proportion of new energy trams produced by automobile enterprises.