Pre-2000 Asiyo went to Gendia Primary school and later joined high school at Kamagambo, in
South Nyanza District, and then attended Kangaru Teachers College in
Embu District. She joined the
Maendeleo Ya Wanawake organisation in 1953 and was elected president of the same in 1958. During her tenure, she advocated for the economic empowerment of the African woman through establishing small-scale businesses and advocating for better farming methods. She further lobbied for the improvement of women's and maternal health care and nutrition and more involvement of women in the three arms of government. She became the first African Woman Senior Superintendent of Women's Prison in 1963 on the eve of independence. Asiyo was elected to Kenyan parliament from the
Karachuonyo Constituency seat in 1980 and held the seat until 1983, when parliament was dissolved. In 1997, Phoebe Asiyo tabled a motion on
affirmative action to increase women's participation in leadership and decision making in parliament and local authorities to at least 33%. Despite the fact that the motion was defeated, she laid the grounds for reforms that bore fruits with the promulgation of the 2010 Kenyan Constitution and brought a shift in female representation in leadership. In 2000
Beth Mugo successfully tabled the affirmative action motion and it was referred to the Constitution Review Commission of Kenya (CRCK). She was the
UNIFEM ambassador from 1988 to 1992. She served until her death as chair of the Caucus for Women's Leadership, formerly called the Kenya Women's Political Caucus, where she mentored young women and advocated for women in leadership roles. ==Death==