In 21, Bai Erjuan studied at ModernK Institute of Practical Music (SM Institute).

From p>211 to 212, she participated in the Korean SBS TV talent show "KPOP STAR" and won the third place in the first season of the country. She won many praises for her elegant and clean voice and lovely personality, and was certified as a "star". Bai Erjuan is the first player on the show to debut an album.

at the beginning of p>212, Bai ejuan entered the practical music department of Huwon University in Korea. In April, signed JYP Entertainment.