This book provides a systematic introduction to the ethnic issues in the Soviet Union, starting from Tsarist Russia, to Lenin, Stalin, Brezhnev, Gorbachev and other periods of policy measures and effects in dealing with ethnic issues and ethnic relations in detail. The introduction, also introduced several theoretical issues of the Soviet Union’s ethnic relations and the research situation of the Soviet Union, the West and China on this issue. The publication of this book is of great reference significance for China to deal with ethnic issues.