China's futures trading volume in May totaled 138 million lots, up 60 percent from a year earlier, but down 20 percent from April, according to statistics released by China Futures Association (CFA) in Beijing late Saturday.

Total trading in May reached 9.37 trillion yuan (about $1.37 trillion), up 85 percent year-on-year.

The country's futures trading totaled 676 million lots, or 38.3 trillion yuan, in the first five months this year, representing a 38 percent growth in volume and 30 percent rise in value,according to the CFA.

Shanghai Futures Exchange (SHFE) completed a trading volume of 51.2 million lots in May, up 232 percent from last May. Futures products listed at SHFE include steel, copper, aluminium, zinc, gold, rubber and fuel oil.