She is best known for her leading roles in the television dramas Rookie (2000), Delicious Proposal (2001), Fox and Cotton Candy (2001), as well as in Rival (2002) and Mai Ratima (2013).

[2] On January 19, 2013, So married Paik Jong-won, chef and CEO of 26 restaurant franchises with 169 branches across the country.

[10][11][12] In April 2016, So's father died the same day as of her son's birthday.

[14] She became the goodwill ambassador for the Seoul International Beauty Industry Festival in April 2013.

On December 12, 2011, she became as a Goodwill Ambassador for the life sharing program.