[1] Choi developed an interest in acting from a young age.

He studied drama at Seoul University of Arts in the 1990s and launched his career in 1995.

[citation needed] In September 2022, Choi's agency announced that Choi was dating a non-celebrity girlfriend who was 24 years younger than him.

[3][4][5] On May 15, 2023, Choi confirmed his wife was pregnant.

[6] His wife gave birth to a son on September 23, 2023.