Topping the world’s three most soft drinks, tea originated in China and was then spread directly or indirectly to all over the world. Tea was one of the important commodities along the Silk Road. As one of China’s great contributions to human civilization, tea-drinking and related tea cultures have enriched and improved people’s quality of life. Studies of the history, foreign trades and spreading of Chinese tea are significant parts of the history research of “One Belt One Road”. These studies demonstrate the influences and promoting effects of Chinese tea and its related tea cultures on the rising and development of the world’s tea cultures. Combining related literature and archaeological studies, this paper introduces China’s research findings of historical development, foreign trades and spreading routes in the world of tea. Hopefully this summary could provide useful reference for the scholars doing related studies.