Show Lo was born in Keelung City, Taiwan. His father is Taiwanese and his mother is a Taiwanese Aborigine of the Amis people. He is an only child, and his parents held multiple odd jobs to support the family when he was growing up. They primarily put up entertainment shows for grassroots events such as weddings, in which his father hosted and his mother sang. Show participated in these entertainment shows as a child, playing the drums onstage when he was just three.