Growth of China's imports and exports is expected to see double-digit gains this year, thanks to rising demand as a result of improvement in the domestic and global economies, the General Administration of Customs said on Friday.

The country's foreign trade volume jumped by 16.6 percent year-on-year to 20.29 trillion yuan ($3.08 trillion) in the first three quarters of this year, according to customs data released on Friday.

GAC spokesman Huang Songping said unstable and uncertain elements may affect the country's foreign trade development, but new growth drivers are taking the place of old ones and steady progress is being made in the structural adjustment, thus supporting stable growth of foreign trade.