Abstract: In June 2019, President Xi Jinping and President Putin signed the "Sino-Russian Joint Statement", which opened a new journey of "Sino-RussianComprehensive Strategic Partnership of Cooperation in the New Era."The seventy years of Sino-Russian diplomacy has achieved fruitful results. The unwavering partnership between the two sides has continued to grow, deepen and expand.Sports diplomacy has faltered in the changing situation of Sino-Russian foreign affairs relations for seventy years, and will play a more crucial role in the development of the new type of major-country relationship between China and Russia in the new era.Analyzing the changes in the sports diplomatic relations and practice of the two countries from the perspective of moral realism, the study holds that the development of Sino-Russian sports diplomatic relations in the past seventy years presents a U-shaped curve. The sports diplomacy in the Sino-Soviet period is characterized by ideological diplomacy based on revolutionary struggle. The sports diplomacy in the Sino-Russian periodhas transited to win-win pragmatic type with mutual benefit as the foundation.With the renewed escalation of Sino-Russian partnership, sports diplomacy, as an important part of China-Russia all-round diplomacy, will have multi-field and all-round in-depth cooperation in the contexts of Sino-Russian economic, regional, safety, cultural and think tank cooperationmechanisms under the strategic cooperation of the "One Belt and One Road" and "Greater Eurasian Partnership" initiatives. Through the comprehensive connection of emotions and interests, we will shape the relationship between China and Russia in the new big powers and provide a regional model for the international construction of the "Community of Shared Future for Mankind".

Key words: Sino-Russian relationship, Moral Realism, sports diplomacy