Tibet in China has welcomed 14.3 million tourists in the first eight months of 2015.
This generated $3 billion in tourism revenue, Xinhua news agency cited the Tourism Development Commission of Tibet as saying.
The May to October period is high tourism season for Tibet, and a big influx of visitors is expected during the week-long National Day holiday from October 1.
Tibet will hold its second tourism and culture expo from Monday to Wednesday. Companies from India, Nepal and other provinces of China will attend the event.
Tourism is a pillar industry in Tibet, with revenue accounting for about one fifth of the region's GDP.
Tibet aims to attract 17 million tourists this year.