She qualified for the 2024 Summer Olympics and won a silver medal in the mixed doubles tournament along with Ri Jong Sik.

[11][12] After the tournament, the pair, having previously avoided the media, briefly answered questions at a press conference, with Kim noting that "We prepared a lot for the Olympics.

"[13] Kim is noted for using a rare type of table tennis racket, featuring long pimpled rubber on the backside, which Reuters stated "caught many top players off guard" at the Olympics.

"[13] Following their silver medal, Kim and Ri shared a selfie on the podium with their fellow medallists, including Lim Jong-hoon and Shin Yu-bin of South Korea.

This was celebrated around the world as a moment of great sportsmanship, but reportedly led to criticism from the North Korean authorities, who according to Daily NK placed Kim and Ri under "ideological scrutiny" upon their return to the country.