He has been the acting governor of Hunan since November 2020 Mao was a delegate to the 11th, 12th and 13th National People's Congress.
He was an alternate member of the 19th Central Committee of the Chinese Communist Party and is a member of the 20th Central Committee of the Chinese Communist Party.
In September 1985, he joined the Chinese Communist Party (CCP).
He had been served as the Secretary-General of Jiangsu (2013), the Deputy Minister of Industry and Information Technology (2013–2015), the Executive Deputy Governor of Jiangxi (2015–January 2020), and Chairman of the State Grid Corporation of China (January–November 2020).
In November 2020, Mao was named the Deputy Party Secretary and acting Governor of Hunan.