In 2012, Son made her acting debut as the teenage Hae-in in the historical drama The Great Seer. She then made her film debut in the fifth installment of comedy series Marrying the Mafia, titled “Return of the Noble Family”. Thereafter, Son played supporting roles in family drama Childless Comfort and romantic comedy Twenty Again. In 2016, she co-starred in tvN's romantic comedy Cinderella with Four Knights.