Liu Yifei has a fairy-like appearance and is called the "fairy sister". She has an otherworldly aura about her. Her facial features are beyond beautiful. She has appeared in many TV series. For example, "Legend of Sword and Fairy", "The Legend of the Condor Heroes", "Dragon" and so on.

Played Zhao Ling'er in "The Legend of Sword and Fairy". Liu Yifei's interpretation of this role was very successful. "Legend of Sword and Fairy" is an ancient puppet show of immortal swordsman. Liu Yifei’s appearance is very suitable for ancient makeup. She has a fairy spirit about her. After Liu Yifei played Zhao Ling'er, there was no other Zhao Ling'er in the world. This shows how much people recognize her role as Zhao Ling'er. The contrast between this character's before and after is very great. In the first half of the TV series, Zhao Ling'er had never experienced big storms and had an innocent personality. In the later period, due to the training of various things, Zhao Ling'er lost her previous innocence and took on the important task of protecting the people of the world. This contrast is still very large. But at the time, Liu Yifei was only sixteen years old and was able to grasp this role so well. It is not easy to present something other than what everyone wants to see. It is very admirable to be able to cook so well at such a young age.

Liu Yifei plays Xiao Longnu in "The Legend of the Condor Heroes". This role also fits her temperament very well. She is fresh and refined, has a cold personality, and is aloof from the world. When she was dressed in white and flew down from the backlight, I was immediately attracted to her. Her look is also very beautiful. The iceberg beauty and the fluttering white clothes are just perfect. She is even more loyal to love. She and Yang Guo fell in love with each other in their company, experienced various hardships, and finally stayed together for life.

In "Dragon", Liu Yifei plays Wang Yuyan, which is also a very representative work of hers.

Liu Yifei's performance in costume dramas is very outstanding, because her outstanding appearance makes people's eyes shine when she appears, and it is difficult not to notice her. The characters she created are unmatched by anyone. In terms of costume dramas, she is undoubtedly the most successful.