Abstract: The communication big data of China Unicom mobile phone users in the forest area of Zhejiang province from 2018 to 2020 were collected and analyzed. The results showed that the peak of forest tourism in Zhejiang province occurred during holidays, and the epidemic had great negative impact on forest tourism. The proportion of female tourists was slightly higher than that of male tourists, and the proportion of 30-39 years old tourists was the highest. The distribution and aggregation effect of tourist number was obvious, and the popularity of forest tourism was positively correlated with urban economic development and population base. Tourists from the proper province accounted for 85%, and that from outside the province mainly came from the Yangtze River Delta region. The proportion of tourists with motor vehicle was higher, per capita trips was 2-3, and the per capita forest stay time was more than 40 minutes.