Sino-Japanese relations move back to the normal track and keep a recovering trend in the year 2019，which marks a beginning of building up a new era for the bilateral relations and is reflected by intensified high-level political exchanges，restarting coordination and working mechanism of all aspects and growing cooperation in economy，trade，social and cultural exchanges. Variables such as the current changes of international relations and U.S.，growing need for economic cooperation and mutual Independence，the guiding power of leadership and policy continuation all contribute to the trend of recovery. However. The bilateral relations are still faced with a series of restraint and challenges，including the difficulties in building up political trust and constructive security relations，Japan’s ongoing diplomacy in containing China and lack of positive mutual perception and sentiment between peoples of the two countries. In 2020，there will be still some disturbance destabilizing the recovery trend of Sino-Japanese relation，however，the general development of the bilateral relations will remain stable，and it will be optimistic for the building of the Sino-Japanese relations in the new era if both sides work together in fostering strengths and circumventing weaknesses in the process of dealing with issues of the bilateral relations.