In 2017, Ren Youlun participated in the youth drama "The Promise of Soaring"; In the same year, he starred in the criminal investigation suspense drama 'Morning Sun'.

In 2018, Ren Youlun starred in the youth campus idol drama "My Heroes"; In the same year, he starred in the movie 'Demon Warrior 2'.

In 2019, Ren Youlun starred in the Qingqi healing sweet pet drama "The Chief's Man"; In the same year, he starred in the vertical screen web drama "Little Brother, I'm afraid he's poisonous".

In 2020, Ren Youlun starred in the fantasy sweet love drama "Meow, Please Make a Wish".

In 2021, Ren Youlun participated in the urban drama "Fallen into Splendor"; In the same year, he starred as the lead actor in the campus sweet pet drama "Binary Love".

On May 27, 2022, Ren Youlun and Zhuang Dafu co starred in the campus sweet pet drama "Binary Love", playing the role of academic genius Fang Yuke in the drama.

On August 29, 2023, the hot blooded suspense era drama "Eve" starring Ren Youlun premiered.

On April 30, 2024, the TV drama "Twelve Letters" specially invited by Ren Youlun started filming and officially announced the lineup; On September 19th, the TV drama "Endless End" starring Ren Youlun was broadcasted on April 24th, 2025.