In 2018, she participated in Tencent Video's youth growth survival show "Produce 101 China" and achieved a high popularity by ranking 14th; In the same year, she released the original singles "Where Are You Going" and "I Like You". In 2019, she starred in the fantasy romance drama "Fairyland Lovers"; In the same year, she joined iQIYI's self-made Chinese songwriting variety show "I’m CZR" and released a single "Little Planet". In 2020, she released her personal music EP "Flight Mode"; In 2021, she starred in the leading role of Jin Xiaoyu, a mortician of Tencent's fantasy romance drama "I am the Years You are the Stars"; In 2022, she starred in the Tencent period blockbuster "Love Like the Galaxy" as He Zhaojun, the fierce daughter of a general; In 2022, she starred in iQIYI’s blockbuster "Mysterious Lotus Casebook" and played Bai Yueguang Su Xiaolou; In the same year, she released multiple self-written singles, including "Regret", "If You Ask, I’ll Be There", and "Fish Wonderland". In 2023, Chen Yihan served as the producer for her first solo album, releasing her first self-written album "Polaris: The whereabouts of the North Star", which includes 8 original songs of different styles.