The ruling Communist Party of China (CPC) promised Monday to deal with unqualified members in a timely way.
A handful of Party members are "corrupt and degenerate," CPC leaders warned at a meeting of the CPC Central Committee Political Bureau.
"The faith of a few Party members has wavered and they have a weak understanding of the Party's tenets and have not followed discipline," a statement issued after the meeting said.
The meeting, presided over by General Secretary Xi Jinping, discussed strengthening the recruitment and management of Party members.
"Some Party organs are not strict with enlisting members and the quality of members who are recruited needs improvement," the statement said.
The aforementioned problems have "affected the Party's vigor and vitality" and its image and prestige among the public, it said.
They have also impaired the CPC's "creativity, cohesiveness and combat power" and should be resolved effectively, it said.