Abstract: This paper has an analysis on trade dependence of service industries in global value chain between China and countries along the “Belt & Road” from the perspective of the“Belt & Road” country composition of China's service industries participating in global value chains, China's contribution to value-added trade in services in countries along the “Belt & Road” and interdependence of service industries in global value chain between China and countries along the “Belt & Road” . The results show that the proportion of countries along the “Belt & Road” in the composition of DVA export and FVA import of China’s service industry tends to be rising. China's contribution to service value added trade in East Asia, Southeast Asia, Central Asia and East Europe is relatively large, among them, Singapore, South Korea, Thailand, India and Malaysia are the top five markets of China's value-added trade in services.China has made a great contribution to the value-added trade in services in East Asia, Southeast Asia, East Asia and Central Asia, especially in South Korea,Vietnam, Kyrgyzstan and Singapore.