International business and trade is the key assistor of international commercial tourism. Guangzhou's target of "global city" based on the construction of international trade centre will lead the tourist industry in Guangzhou into a new stage-to construct the international commercial tourism centre. The study summarizes the history and current situation of international commercial tourism in Guangzhou by comparison with Beijing and Shanghai, discusses the disparity of Guangzhou and New York, and concludes that Guangzhou is the trade and tourism centre of South China at present. It further suggests that Guangzhou shall target at "global city", upgrade international commercial tourism service, reduce disparity with Beijing and Shanghai, and combine the development of tourism with trade and culture in order to build up a cultural centre with global fame. <<