The purpose of this research is to examine the Soviet ballet in the 20th century in terms of socialist realism and to reappraise them. First, I focused on the conditions of ballet in the Soviet era after the October Revolution; how the classical ballet managed to survive; what kinds of works attempted by young choreographers like Goleizovsky and Lopukhov. Then, I investigated that how the Soviet ballet works represented socialist realism. Socialist realism had been the principle of creation during Soviet regime since 1934. It was not only an artistic style but also a propagandistic ideology that promoted the view of Soviet life. Socialist realism tried to show ought to be, such as an optimistic Socialist utopia not the real social problems. This trend was is based on Marxist-Leninist aesthetics. The fundamental principles of this aesthetics consisted of “nationality(narodnosti’)”, “class system(klassovosti’)” and “partizanship(partinosti’)”. I analyzed four Soviet ballets: The Red Poppy (by Glière and Tikhomirov), The Flames of Paris (by Asafiev and Vainonen), Romeo and Juliet (by Prokofiev and Lavrovsky) and Spartacus (by Khachaturian and Grigorovich). The Red Poppy was considered as the first Soviet ballet because it dealt with the theme of soviet “contemporary” life. The Flames of Paris was full of energetic and vivid character dances which symbolized “nationality (narodnosti’)” of soviet aesthetics. “Drambalet” in 1930s’ was the alternative name of the socialist realism ballet, and Romeo and Juliet was called as the genuine drambalet. Also, Spartacus was provided as the model of Soviet ballet. In conclusion, this study examined the way how socialist realism was reflected in the Soviet ballets. The aesthetic values other than the ideology were also interpreted. Finally, the further steps of study about the Soviet ballet in the 20th century can be developed on the ground of history and aesthetics.