Song was born in
Changnyeong,
Keishōnan Province,
Korea, Empire of Japan (now in South Gyeongsang Province, South Korea). She entered the Pyongyang Movie College in 1955, but left in 1957 to give birth to a daughter. She later re-enrolled and graduated, having her film debut in 1959. She became a popular actress in the 1960s, appearing in movies including
Onjŏngryŏng () and
Baek Il-hong (). Most accounts of Song are drawn from the memoirs of her sister,
Song Hye-rang. Her former friend
Kim Young-soon published her memoir ''I was Song Hye-rim's Friend'', and revealed that she and her family were sent to a concentration camp for ten years after she found out Hye-rim's secret, namely, that she was Kim Jong Il's mistress, a fact that was hidden at the time even from Kim Il Sung. This resulted in the death of her parents and children, and her husband was taken away to never be seen again. She was rumored to have defected to South Korea in 2003. ==Personal life==