Czechoslovakia carried out a series of reform measures in the late 1950s, but due to lack of experience and ineffective implementation, the economy encountered difficulties, so the Czech Republic interrupted the reform. However, this practice has aggravated economic deterioration and social unrest, and some people of insight have once again called for reform. At the beginning of 1968, dubcek, who advocated reform, became the first secretary of the Czech Central Committee and put forward the slogan of "taking the socialist road in Czechoslovakia". Under the leadership of dubcek, Czechoslovakia carried out political and economic system reform in an all-round way, including socialist democracy, planned market economy and independent foreign policy. The implementation of the reform has won the support of more than 90% people, and there has been a situation in which everyone cares about political democracy and social reform, which is called "Prague Spring" in history. However, the Czech reform was opposed by the Soviet Union. Later, the Soviet Union and other countries openly invaded Czechoslovakia and interfered in its reform. "Prague Spring" was interrupted by "Moscow Cold Current".