Climate，ecology，and social-economic changes have had a significant impact on the fishery legal order in the Arctic. “Agreement to Prevent Unregulated High Seas Fisheries in the Central Arctic Ocean” was passed in 2017，and signed in 2018. In the year of 2019，Russia，the European Union，Canada，Japan，the United States，and South Korea have ratified the agreement one after another. After making empirical and normative research on the new developments of the agreement，the results shows that the agreement is likely to be ratified by all parties in 2020，which will officially enter into force and ban commercial fishing activities in the high seas of the central Arctic Ocean. Besides，of the six parties that have ratified the agreement，the decisions approved by each party are consistent with the current trends in the Arctic policy of their own countries or organizations and are also consistent with their positions in participating in the governance of Arctic fisheries. In response to the positive and negative effects of the six parties’ new development，China can actively participate in the implementation of the Agreement，strengthen cooperation with Arctic countries and stakeholders on the issue of Arctic fisheries，emphasize the relevant rights and obligations enjoyed by China in accordance with international law，promote the establishment of Arctic Ocean high seas fisheries management organizations process，and continue to strengthen China’s policy support and capacity building to participate in the governance of Arctic fisheries.