The number of China's outbound travelers is expected to reach 52 million this year, up 7 percent year-on-year, the China National Tourism Administration (CNTA) forecast in a report issued on Friday.

From January to May this year, China's outbound travel tourists totaled 26.8 million, up 19 percent over the same period last year, according to the report posted on the CNTA's website.

The report attributed the outbound tourism boost to stable development of China's economy and the appreciation of the yuan against the US dollar.

Further, the number of domestic tours throughout the year in China is likely to reach 2.15 billion, up 13 percent year-on-year, the CNTA added.