The Sixth National Congress of the Communist Party of Vietnam held in December 1986 is a particularly important political event of the country. It marked a historic turning point in the cause of socialist construction in Vietnam, oriented the whole Party, the whole army and people of Vietnam to promote the strength of the unity of the entire nation to conduct a comprehensive renovation of the country. After more than 30 years of implementing the renovation from 1986 up to now, Vietnam has achieved many great and historic achievements in the process of building socialism and defending the Fatherland under the leadership of Communist Party. This book has been compiled and published for the purpose of systematizing documents of the National Assembly Congress of the Communist Party of Vietnam; meet the learning, research and research needs of state agencies, from the central to local levels. The book is divided into 2 parts: Part I: Party Congress VI, VII, VIII, IX; Part II: Party Congress X, XI, XII.