In order to protect the external environment for human survival and development，and to close the gap with the emission control targets compatible with 1.5℃，the global emission reduction target is gradually promoted to the net zero carbon emission orientation. This paper introduced the latest facts on global climate change and pointed out that the world had entered climate emergency. It also summarized the national and regional long-term low greenhouse gas emission development strategies guided by the net zero carbon emission target，as well as the challenges faced by the implementation of the target. By analyzing the significance of China’s net-zero-carbon-emission-oriented strategies from both positive and negative aspects，this paper put forward several countermeasures for China to formulate and promote its strategies. First，coordinating the Intended Nationally Determined Contributions with net-zero-carbon-emission-oriented target. Second，building a zero-carbon policy system and adjusting the energy structure and industry structure. Third，enhancing the scheme to address climate change risks interiorly，and energizing the international cooperation and exchange.