When foreign people think of British culture nowadays, they can easily picture gentlemen and ladies elegantly dressed, surrounded by fine furniture and utensils, enjoying afternoon tea. The unique tea culture has already become a strong impression of Britain. This article explores the positioning of tea within the map of cultural differentiation, highlighting its status as a significant symbol of British culture, despite Britain not being its country of origin. The success of tea arose from the collision of Eastern and Western civilizations, with Chinese tea being introduced to Britain by Dutch merchant ships in the 17th century, marking its economic rise. The paper raises key questions about how tea transformed from an exotic product into a British cultural icon and whether the promotion of tea culture in Britain is mere imitation or rooted in local traditions. Additionally, it reviews research by Chinese and foreign scholars on British tea culture, focusing on the origins of tea culture in China, including the history of tea cultivation and consumption, and the evolution of tea culture in various dynasties. The second half describes in detail the thriving process of tea trade in Britain since the 17th century, the background of tea culture breaking the gender status and other restrictions in British society, and the different connotations and influences of tea culture in the British upper society and working class.