As three most influential socialist genres of contemporary Europe and America which are democratic socialism, ecological socialism and market socialism.After the disintegration of Russia,they all made a big adjustment of their theories and developed a lot.Although the three great schools are designed opposite to capitalism, their criticism of capitalism mostly focused on perfecting the capitalist system, and some even intentionally or unintentionally covered up the basic contradiction of capitalism.Three great schools have great influence on both the socialist movement in developed countries and the reform practices of socialist countries.Therefore, we should analysis the advantages and disadvantages of these three genres, not only take its positive and reasonable view, but negate their negative claim.

Editor: Zhou Miao