Abstract: Through establishing a three-regional input-output model, this paper measures and calculates the regional multiplier effect, the inter-regional spillover effect and the feedback effect of the service industry within the three economic regions of China, including Yangtze River Delta, Pearl River Delta and Bohai Rim.The results show that the inter-regional spillover and feedback effects of the service industry between Yangtze River Delta and Bohai Rim are bigger than that of Pearl River Delta. The Bohai Rim and Yangtze River Delta have bigger spillover effects on other regions than that from them. However, the inter-regional spillover effect of Pearl River Delta is smaller than that received. The service spillover between Yangtze River Delta and Bohai Rim can be seen frequently, while the service spillover between Pearl River Delta, Yangtze River Delta and Bohai Rim is less.

Key words: service industry; a three-regional input-output model; spillover effect; feedback effect