As the title implies, this study talks about preserving knowledge of fictional literature works by setting the research in Harry Potter novels. It is no denying that the novel written by J.K. Rowling always are in demand anywhere in the world and eventually become part of popular culture, especially in Western cultures. In order to gain understanding of the process of preserving knowledge of this fictional world remains well preserved, J.K. Rowling forms partnership with universal studios to seek presenting a themed-attractions named The Wizarding World of "Harry Potter" which is based on Rowling's best-selling Harry Potter novels. Using the help of SECI Model. Only two conversions are used, socialization and externalization to see how knowledge of the fictional world of harry potter is preserved and experience a transfer process.