She was defeated in the third round in the individual event.
At the 2016 Summer Olympics, she again competed in both the individual and the team epee events.
She reached the quarterfinals in the individual event, where she lost to Rossella Fiamingo.
In the team event, South Korea lost to Estonia in the quarterfinals.
In 2011 and 2014, she won the Asian Fencing Championships.
She has also won silver (2015) and bronze (2012 and 2019) at the Asian Fencing Championships.
Choi began fencing in junior high and made her international debut in 2011, at the World Cup event in Nanjing.