Mongolia said China remained its top export destination, accounting for 66 percent of its total exports last year.
Mongolia's exports to China grew by 811.2 million dollars, or 13.1 percent year on year, while imports increased by 1.5 billion U.S. dollars, or 35.5 percent, according to data released by Mongolian Customs General Administration on Friday.
The bilateral trade amounted to 8.4 billion U.S. dollars, increasing by 26.8 percent year on year, it said.
Mongolia's major export items to China include coal, copper and molybdenum concentrates, wool and cashmere.
Russia is another important trade partner, and its imports from Mongolia include animal products, in particular beef and horse meat, as well as minerals such as fluorspar, copper concentrates and gold.
Mongolia traded with about 160 economies across the world in 2018.