*Significance: Liu Shaoqi made a report on the Suez Crisis and the anti-communist revolts in Hungary and Poland; Zhou Enlai made a report on the 1957 economic plan; Chen Yun made a report on food issues. Mao Zedong delivered a closing speech focusing on the relations with the Soviet Union and upholding Joseph Stalin's legacy.
3rd Plenary Session
*Date: September 20–October 9, 1957
*Location: Beijing
*Significance: Deng Xiaoping made a report on the Anti-Rightist Campaign; Chen Yun made a report on State governance and development of agriculture; Zhou Enlai made a report on labor insurances. The Great Leap Forward was first outlined.
4th Plenary Session
*Date: May 3, 1958
*Location: Beijing
*Significance: The meeting approved the report which was to be delivered to the 2nd Session of the Party's 8th National Congress as well as a resolution on the meeting of communist and workers' parties held in Moscow in 1957.
*Significance: The meeting focused on organizational issues, particularly appointing Lin Biao an additional Vice-Chairman of the CPC Central Committee, and starting the publication of Hongqi with Chen Boda as editor-in-chief.
*Significance: Also known as "Lushan Conference", a debate on the Great Leap Forward occurred. In the end, Peng Dehuai was accused of being a counter-revolutionary and removed along with other Party leaders like PLA Chief-of-Staff Huang Kecheng and former General Secretary Zhang Wentian. The plenary meeting followed a central conference started on July 2.
9th Plenary Session
*Date: January 14–18, 1961
*Location: Beijing
*Significance: Chen Yun made a report on the 1961 economic plan; Deng Xiaoping made a report on the 1960 Moscow meeting of communist parties. Regional bureaux of the CPC Central Committee were established at this session.
10th Plenary Session
*Date: September 24–27, 1962
*Location: Beijing
*Significance: The meeting repeated Mao Zedong's assessment that Chinese economy was to take agriculture as basis to develop industry. The session's official communique also started to outline Mao Zedong's "theory of continued revolution under proletarian dictatorship" which led to the Cultural Revolution.
11th Plenary Session
*Date: August 1–12, 1966
*Location: Beijing
*Significance: First plenary meeting after 4 years. It approved the Decision of the Central Committee of the Chinese Communist Party Concerning the Great Proletarian Cultural Revolution, setting the course for the Cultural Revolution, which had started in May. The Politburo Standing Committee was expanded from 7 to 11 members, with Lin Biao as the single Vice-Chairman and Liu Shaoqi severely demoted.
12th Plenary Session
*Date: October 13–31, 1968
*Location: Beijing
*Significance: Liu Shaoqi—the main target of the Cultural Revolution—was condemned as "renegade, traitor and scab" and expelled from the Party. A decision to convene the Party's 9th National Congress was adopted.