But those figures are less convincing without visitor revenue from Hong Kong, Macau and Taiwan, said Miao Lu, co-author of the CCG report.
Excluding visitors from those three places, the researchers found that, based on official data, Chinese tourists made 30 million more trips abroad than foreigners made to China in 2015. Those numbers remained largely unchanged last year, Miao said.
"Take away the three areas, and there was a big number of foreign tourists who were actually Chinese nationals living abroad. So the number of foreign visitors was really small, which is inconsistent with China's growth in general," she said.
More than 60 per cent of foreign tourists visiting mainland China are from Asia - mainly from South Korea and Japan, the report said.
Beijing-based tourism researcher Liu Simin said the appreciation of the yuan before 2016 had affected the market, but it was also struggling to compete with well-established holiday spots in Asia.
"Popular tourist destinations in Asia such as Thailand provide better service and are often better advertised," he said.
Dutchman Simon van Hout, a teacher in Zhejiang province, said foreigners could be put off travelling to China because of its reputation for polluted air and food safety problems.
"When I first came to China 1-and-a-half years ago, I was afraid of three things: the air pollution, the water pollution and the food," van Hout said.
Other Asian countries might be more appealing travel destinations for foreigners, he said. "Japan, for example, has the reputation of being cool. When people think of Japan, they think of hi-tech, and Korea too. China seems more foreign, more scary and less hip," he said.
South African Debbie van As, who lives and works in Jiaxing, a small city near Shanghai, agreed that foreigners tend not to think of China as a holiday destination. "China has always been reported as being dirty, polluted, not very nice people, suspicious foods, language problems," she said. "I was told all of these things before I came here.
"Because of internet restrictions, viz. a lack of advertising, China doesn't get the coverage like other Southeast Asian countries and therefore [potential visitors] continue to believe that China is only about the bad - and the only tourist attraction is the Great Wall," she said.
Wang Huiyao, director of the CCG, said visa policies were also a barrier. Although visa-free transit stays have been introduced in some cities, and Hainan Island offers tourist visas on arrival, strict policies otherwise apply.
China also had the world's lowest percentage of foreign students, he said. Of its 35 million university students, some 200,000 - or less than 1 per cent - were foreign. The number of long-term foreign residents, including students, was also low at about 800,000, Wang said.
"If there are not so many expats here, there are not so many people coming to visit them, or sending kids to study here," he said.
Meanwhile, many local travel agents were focused on outbound services as the growing middle class head overseas in greater numbers, Liu said.
"All the agents need to do is send people to these places, whereas it takes a lot more money and effort and earns less to receive foreign tourists," he said.
But some in the industry are trying to lure more foreign tourist dollars. Ctrip, China's largest online travel agency, recently teamed up with the Confucius Institute Headquarters - a government organisation providing language and cultural teaching services in foreign countries - to generate more interest from overseas.
Zhu Lei, who heads strategic cooperation at Ctrip's international business unit, said China should be attracting more foreigners because of its rich history and culture, but also for other reasons - including its steady currency and visa-free transit stays in some cities.
He said Beijing's belt and road trade plan was also a chance to attract more foreign tourists. "Guided by that initiative, local governments are now targeting Russia, eastern and central Europe and South Asia for inbound tourism," Zhu said. "These regions will be the source of more visitors to China."
