Ko studied law at Soochow University before attending the Institute of Revolutionary Practice.
She worked for Chunghwa Post and served as secretary-general of the Republic of China Postal Workers' Union before moving to the Chinese Federation of Labor, as its executive director.
[1] Ko was appointed to the Legislative Yuan as a representative of laborers affiliated with the Kuomintang.
After functional constituencies were phased out, Ko was reelected to the Legislative Yuan in 1992 and 1995 via the Kuomintang party list.
[1][2] She subsequently served as general secretary of the Chinese Association for Relief and Ensuing Services,[3][4] and later became its honorary chairman.