He began his career as a child actor, model and dancer, as part of the Nam Hyun-Joon and Kids dance crew.

[citation needed] In 2009, Jisung started learning popping from Nam Hyun-joon and continued to be active in his dance crew, until he was 11 years old.

[4] In addition to performing with dance crews and as a backup dancer for artists, Jisung also appeared as a child actor in many TV dramas, films, and commercials,[1] including the 2010 KBS2 children's program TV Kindergarten Funny Funny,[5] the drama Tree with Deep Roots, and films Crossbow War[6] and Go, Stop, Murder (2014).

[7] In 2013, Jisung represented South Korea in the CCTV International Children's Concert held in China.

The Dancer,[1] filming took place in Los Angeles, America, with his seniors, Eunhyuk and Taemin from SM Entertainment and Lee Gi-kwang.