There were many reasons for the repeated failures of movies and TV series adapted from online novels. The following are some possible reasons: 1. The quality of online novels themselves is not good: Some online novels are not of high quality. There are many problems in the storyline, character image, writing style, etc. After such online novels are adapted into film and television dramas, they may not be able to reach the level of the original work, causing the audience to be disappointed. 2. The quality of the script adapted from the online novel is not high: the storyline of the online novel is relatively simple, lacking in depth and breadth. After being adapted into a film and television drama, it may need to be cut and adapted more in order to be displayed on the screen. If the quality of the adapted script was not high, the audience might not be able to feel the essence of the original work and be disappointed. 3. The target audience of online novel adaptation is not accurate: Some online novels are targeted at young people, and the adapted film and television series may not be able to attract this age group. If the target audience of the film and television series was not accurate, the success rate of the film and television series would decrease. 4. The copyright issue of the adaptation of online novels: After the online novel is adapted into a movie, the copyright issue needs to be paid attention to. Some online novels had already been bought by other companies. If you wanted to adapt them, you needed to communicate with the original copyright owner and obtain permission. If you don't get permission, it's illegal to adapt. 5. The special effects of the adaptation of online novels: The storyline of online novels is often more illusory. If you want to adapt it into a film and television drama, you need to make special effects. If the quality of the special effects was not high enough, the audience might be disappointed. The reasons for the failure of the web novel adaptation were many.