Wan Shuangjian was just two years old when he was kidnapped in 1995 while playing outside his home with his older sister in Shenzhen in southern China, reported the People's Daily Online.
Shuangjian, who was renamed Luo Xiaoding by his new parents and is now 22, was found by police last month using facial recognition technology.
His twin brother Shuanglong had given a photograph of himself to police investigating human trafficking back in 2008.