【正文】 Britain2. And there were four parts of Sherlock Holmes‘s tales being written in Victorian Era. So, they provided a large number of detailed descriptions to the stories‘ background stage, the London in Victorian Era. The famous British novelist William Somerset Maugham (25 January 1874 – 16 December 1965) said, ―No detective stories have ever had the popularity of Conan Doyle‘s and because of the invention of Sherlock Holmes I think it must be admitted that none have so well deserved it.‖(Christopher Morley, Steven Rothman, 1990: 209) Sir Arthur Conan Doyle‘s tales of Sherlock Holmes includes 4 novels and 56 short stories. It was a great work in the field of detective novel introduced a fictional private detective Sherlock Holmes to world. It became an eternal classic and translated into 57 kinds of languages. It was recognized the Bible in detective fans. And the first novel, A Study in Scarlet, was written in 1886 and published on a magazine named Beeton‘s Christmas Annual in 1887. That first novel and the other three parts of Sherlock Holmes‘s tales, The Sign of Four (1890), Adventures of Sherlock Holmes (1892) and Memoirs of Sherlock Holmes (1894) were created in Victorian Era. And it made a detailed description to the London city in Victorian Era. Nowadays, the tales of Sherlock Holmes are still popular all around the world. Introduction to This Thesis In 1886, Arthur Conan Doyle finished his first significant piece, A Study in Scarlet, the first novel of Sherlock Holmes‘s tales. Now, it has been more than twelve decades. Presumably, when Mr. Doyle wrote this work, he had never thought about that his work would be popular all around the world, and he would gain both fame and wealth for the character in his work, a ―consulting detective‖ Sherlock Holmes who was accorded as the symbol of detectives. Nowadays, the detectives who lived in the London of Victorian Era has bee the idol of the people. At the same time, his stories aren‘t limited in the books, and he leaps from the pages of 2 (accessed February, 1, 2020). 寧波大學(xué)科學(xué)技術(shù)學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 7 novels onto the big screen. A large number of films, TV series, ics, cartoons, games and some other works with the tales of Sherlock Holmes as the theme e as thick as hail. It is a nice way to spread Conan Doyle‘s tales of Sherlock Holmes. What a pity, there are some inferior works being wrapped in nicesounding phrases as the ―real work of Conan Doyle‖ or ―Complete Sherlock Holmes‘s continuation‖. And those works change or even pletely abandoned the place and era Sherlock Holmes lived and worked. They cut the London of Victorian Era from Sherlock Holmes, from the novel. It will make the people who read or watch those works believe that Sir Arthur Conan Doyle created the work in 21st century, and naturally ignore the London of Victorian Era from Sherlock Holmes‘s tales. It makes the fans disappointed. It is the sorrow of history. It is irreverence to the writer. And it cannot be accepted by all the researchers. ―Holmes could never have lived anywhere else but London,‖ says Andrew Lycett. (Joshua Hammer, 2020) Therefore, it is necessary to study the London in Victorian Era which is presented in Conan Doyle‘s tales of Sherlock Holmes. With the great honor, the author have the good fortune to read the previous scholars‘ works in this field. The most of foreign scholars‘ studies in this field are monographs. Sally Mitchell made a detailed study about Victorian Era life. Lee Jackson made a good description of Victorian London in all directions. According to Christopher Morley and Steven Rothman‘s study, the author got some information about Arthur Conan Doyle. Andrew Smith, it found the gradual emergence of a selfconscious scrutiny of gender in London from the tales of Sherlock Holmes as the author did. Joshua Hammer introduced the stories of Arthur Conan Doyle‘s writing the tales of Sherlock Holmes to the public. Jeffrey Meyers and Valerie Meyers showed the social responsibility of Holmes. And the Inter web, , also produces the key points about Victorian Era and Arthur Conan Doyle. The Chinese scholars did many systematic studies, too. Chen Xiaolan studied deep relationship between the cities and the detective novels in her thesis, Detective Novels and the control of Cities: A Study Based on Conan Doyle’s Novels. Yu Fang found the caring for humanity of Sherlock Holmes. Wang Ting chose to understand Victorian Era with reading Conan Doyle‘s tales of Sherlock Holmes in her study, and introduced Holmes‘s influences to the Britain populace. Zhang Jiong tried to inquire into the image of Holmes by the details. Gao Jie described the detectives in detective literatures as heroes in the thesis Discussion on the Detective Literatures from the View of Culture. The side of colonialism in London is presented by Liu Xiaohan. Chen Zhang pointed 寧波大學(xué)科學(xué)技術(shù)學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 8 out that the real cities and the cities in literary works exist side by side and play a part together in his Writers and Cities: the Writing Characteristic of the Cities in Literatures. Li Zeng and Long Ruicui discussed the classes in Victorian Era in their study. There is no doubt that the previous scholars did good jobs in their works, but their studies failed to show the London in Victorian Era from the tales of Sherlock Holmes. This thesis will have the aid of the textual analysis, and try to find out the clues from the work, presenting the London where the gentleman in Victorian Era, Holmes lived. And it will make a full understanding to the London of Victorian Era. It is significant to study the London of Victorian Era in the tales of Sherlock Holmes. This thesis will recover and reunderstand to the history. The author wants to show respect to the writer and his work. At the same time, it is a salute to Mr. Sherlo