China's aviation industry has achieved double-digit growth in the first six months this year, due to sharp rise in air traffic demand, the top official of China's civil aviation said Tuesday.

From January to June, China's aviation industry saw 25.38 billion ton/km in air traffic turnover, up 31.7 percent year-on-year, said Li Jiaxiang, director of the Civil Aviation Administration of China (CAAC), at a work conference.

During the period, passenger volume totaled 126 million, up 17.6 percent over the same period last year.

Fixed asset investment in the civil aviation sector hit 17 billion yuan (2.5 billion U.S. dollars) in the first half of the year, up 19.7 percent, Li said.

He attributed the robust development of civil aviation industry partially to local governments' enthusiasm for the industry.