The present paper aims to examine the activities of the General Jewish Worker's Union in Lithuania, Poland, and Russia(Всеобщий еврейский рабочий союз в России и Польше, Бунд), commonly known as the 'Bund'. The Bund had been in pursuit of the two contradictory movements, one class struggle and the other national movement. In the process of dreaming of a better world, the Bund strove to make a better world through class conflict and revolution while maintaining its national identity as Jews.The Bund was a socialist party of Jews, founded by 13 poor students in Vilnius in 1897 and it had been active throughout 1921. The Jewish socialist movement, having started from a secret discussion group of Jewish students and workers, made constant efforts to bring about both class and national liberation, sometimes in collaboration with and other times in separation from the Russian Socialist Democratic Party, the leading force of the Russian Revolution in the turbulent times of the late 19th to the early 20th century.Following the Pogrom in 1903, the Bund had separated from the Russian Social Democratic Party and put more focus on addressing the national question of Jews in Russia. Then after the 1905 Revolution, when the Russian government cracked down the revolutionary forces, the Jewish organization returned to collaborate with the Russian Socialists and put joint efforts to abolish the 650 discriminatory laws against Jews, in the February Revolution in 1917. After the February Revolution, the Bund which had been in support of the Temporary Government in the February Revolution did not support it in the October Revolution. However, it kept supporting the Revolutionary Government again, witnessing the Bolsheviks to oppose the pogrom against Jews committed by the White Army in the Civil War.The Bund had led a total of 312 strikes of Jewish workers between 1898~1900 which took place in the north-west part of Russian and in Poland. Between 1901-1902, it published newspapers in 400,000 issues,organizing 170 strikes and 30 street demonstrations. Until 1921, the Jewish movement held eight times of the Congress and 13 general assemblies.The Bund, transforming from an intellectual gathering to the labor movement, played an important role in making Yiddish as the major language in the communication amongst Jewish proletariats. It worked itself up to the political party. When the majority of its members were purged in the earlog 1930s, the movement saw its fortune declining and its dream frustrated in the really existing socialism in the Soviet Union.However, it should be emphasized that it laid the foundation for the Russian Revolution, contributing to the development not only of the Jewish or Russian history but also to that of the world history.