The Paris Agreement has set one of its targets that to make efforts to limit the temperature to increase 1.5℃ above pre-industrial levels（in short 1.5℃ target）. Comparing with 2℃ long term temperature goal，the 1.5℃ target will reduce the climate risks for the earth systems，but need more stringent global mitigation actions. Although the Parties had committed their national determined contributions till 2030（2025），there is still a big gap with respect to the 1.5℃ target. The global mitigation actions should be taken immediately to reduce emissions. Other actions related with decarbonization and carbon sequestration measures should also be conducted to reach this target. 1.5℃ target is more than just a direction，but an important indicator of starting to implement future low-carbon sustainable development.