On March 19, 2014, she was revealed as a trainee under SMROOKIES.
She debuted as a member of Red Velvet on August 1, 2014 with the group's first digital single "Happiness".
Following her injury at 2019's SBS Gayo Daejeon, she was on hiatus from all group activities.
On August 19, 2020, SM Entertainment released a statement stating that Wendy will be participating in the group's promotional activities at a level that does not strain her.
On March 10, 2021, SM Entertainment announced that Wendy will be making her solo debut in April. On March 24, 2021, a teaser photo was released, confirmed that she will be releasing her first mini album, Like Water, on April 5.
On December 25, 2019, Wendy fell from a stage while rehearsing for a solo performance at the annual SBS Gayo Daejeon. She suffered serious injuries to her pelvis, wrist and cheek. SBS later issued an apology and has begun an internal investigation into the cause of the accident.