Abstract: People often regard socialist nation as a negative and passive strategical part in preventing evolution.Especially for the Soviet Union,one often thinks it lacks of mental guard for preventing evolution and ruins socialism because of Gorbachev s new thoughts.To calmly think about Lenin s and Khrushchev s thoughts of coexistence between socialism and capitalism again,we can find that both of them put forward an active and positive anti-peaceful evolution stand,which pays much attention to both inner preventi...