Song revealed that she had changed her birth name from "Cheon Seong-im" to "Cheon Soo-yeon" on episode 351 of Running Man, stating that she had changed it because "a lot of people recognize it nowadays".
Song mengungkapkan bahwa dia telah mengubah nama kelahirannya dari "Cheon Seong-im" menjadi "Cheon Soo-yeon" di episode 351 Running Man, yang menyatakan bahwa dia telah mengubah namanya karena banyak orang mengenalinya saat ini.