This paper focuses on 51 samples of "Belt and Road Countries"(BRCs) from the four Economic Corridors,and makes an empirical analysis of the behavior characteristics of China's ODI in the above countries and the consequent environmental risks exposed to Chinese MNCs. The results show that China's ODI mode in BRCs is environmental sensitivity in terms of location distribution and industrial selection. The high investment failure caused by Chinas ODI mode,coupled with the fragile eco-environmental constraints of the host country,has become the main symbol of the environmental risk of China's ODI....