The officials, including both high-ranking officials and lowly bureaucrats, were involved in 16,761 cases, the Central Commission for Discipline and Inspection of the Communist Party of China said in a statement.
The austerity drive aims to reduce bureaucracy, extravagance, and undesirable work habits.
In 2014, 71,000 officials were subject to disciplinary action for breaking frugality rules.
Violations, however, continue to occur, with officials still using government vehicles for personal errands, as well as issuing unauthorised subsidies, and holding extravagant receptions, weddings and funerals, state-run Xinhua news agency reported.