On April 19th, 211, Yoon Bo Mi made his official debut as an Apink group, releasing Seven Springs of Apink from extended play, with the main song I don't know, and passed Mnet《M's M! Countdown appeared on the stage. In June of the same year, the single "It Girl" was released; On November 22nd, the second extended play Snow Pink was published.

On April 19th, 212, the first anniversary single "April 19th" was released; In May, the first regular album UNE ANNEE was released.

On July 5th, 213, the album Secret Garden and the second remix single BUBIBU were released. Since the 17th, Yoon Bo Mi has hosted the MBC variety show Idol of the Week. In August, 213, I collaborated with K-Hunter in the song Marry me and starred in its music video. In December 213, I collaborated with M.I.B on the song "Let's talk about you".

On January 13th, 214, the single Good Morning Baby was released. On March 31st, the fourth extended play Pink Blossom was released. In June, Yoon Bo Mi and Kim Nam Joo formed ApinkKBNN, a sub-group of APINK.

In January, 215, Yoon Bo Mi participated in the female soldier special of the MBC variety show Real Men. On July 16th, the second regular album Pink MEMORY was released.

On March 9th, 216, she starred with Kim Nam Joo in the food entertainment program "The Road of the God of Food 2".