The popularity of British second-hand culture has profound historical and social roots. In the early 20th century, affected by two world wars and economic recessions, British people formed a thrifty life habit of making full use of resources. With the progress of the times, this thrifty tradition has not disappeared with economic prosperity, but has evolved into a fashionable environmental protection culture. The British people believe that reusing second-hand goods is the most direct way to reduce resource waste and protect the ecological environment, which is a responsible life attitude for society and nature. Second-hand markets and charity shops are the core carriers of British second-hand culture. Every British town and community has a large number of charity second-hand shops, which are operated by charitable organizations. The goods sold are donated by citizens voluntarily, and all profits are used for public welfare causes. Citizens can buy affordable second-hand clothing, books, toys and household goods in these shops, realizing resource recycling while contributing to public welfare. Large-scale flea markets and weekend second-hand fairs are also popular among citizens, becoming a characteristic civilian leisure scene. Retro aesthetics promotes the prosperity of British second-hand culture. A large number of young people love second-hand vintage clothing, old furniture and classic old books. These old items carry historical traces and unique texture that new products do not have, meeting people’s pursuit of personalized and retro aesthetics. Second-hand fashion has even become an important part of British street fashion, and many fashion bloggers and designers take second-hand retro styles as creative inspiration. Book second-hand circulation is the most distinctive part of British second-hand culture. British people have a strong reading tradition, and second-hand bookstores are all over the streets. Old books with handwritten notes and historical traces are more popular than new books. Students and literary lovers often patronize second-hand bookstores to collect classic works, realizing the inheritance and reuse of knowledge and culture. This second-hand book tradition promotes the spread of knowledge and forms a good reading and sharing atmosphere. Modern British second-hand culture has broken the traditional thrifty attribute and become a diversified lifestyle. It is no longer limited by economic conditions, but has become a fashion choice for environmental protection and personality. Even wealthy families will take the initiative to donate idle items and buy high-quality second-hand goods, advocating the life concept of low carbon, environmental protection and moderate consumption. British second-hand culture interprets a mature and rational life aesthetics. It abandons extravagant consumption and blind pursuit of new products, advocates resource conservation and sustainable life, and is a concrete embodiment of British people’s environmental awareness, thrifty tradition and personalized aesthetic.