Ma Linxiang, a deputy village chief from the Beijing suburb of Qingheying, hosted the estimated 250-table wedding at a convention centre that was part of the main 2008 Beijing Olympics venue during the week-long National Day holiday last week.
Mr Ma told a newspaper the wedding was hosted by both families and he "couldn't stop" the bride's family from spending so much on the venue, as well as a troupe of performers that included two celebrities famous for their own lavish wedding.
A branch of the ruling Communist Party's anti-graft watchdog fired Mr Ma for waste and discipline violations, adding that while it had not found any abuse of public funds, it was investigating.
Since taking charge of the Communist Party late last year and the reins of state in March, President Xi Jinping has called corruption a threat to the party's survival and vowed to go after powerful "tigers" as well as lowly "flies".
Mr Xi has sought to address growing public ourage at the illegal or unethical behaviour of party officials, especially those with flamboyant lifestyles which they could not possibly afford on low government salaries.