Brisbane City Council's overseas travel expenses have risen to $185,000 - a figure more than double that of the previous financial year and 6 times more 2015 to 2016 period.

The 30 trips involved Council Officers visiting China and several European destinations for conferences and site inspections, including a $37,000 trip for three council officers to attend the 2018 Trade Fair for Water, Sewage, Waste and Raw Materials Agent.

Opposition Leader Peter Cumming said the internet should make face-to-face contact easier than ever, and overseas expenses should be decreasing, not hitting record levels.