Wang Dongxing served as the deputy chairman of the ruling Communist Party of China (CPC) in the past.
He was "an excellent CPC member, time-tested loyal communist fighter and proletarian revolutionist," state-run Xinhua news agency quoted a CPC statement as saying.
Wang was head of Mao's personal bodyguard between 1947 and 1976 and his chief of staff for several years. So much so that Mao once remarked that "I don't trust other people. I'm used to Dongxing being by my side," the Southern Weekly newspaper said.
Wang was promoted to vice-chairman of the CPC the next year but had to resign in 1980.
It was after Mao's death, that Deng Xiaoping, the reformist leader managed to take control of the party and reverted its policy from one of hardcore communist ideology to reform and opening which in the last three decades played a decisive role in transforming China into the world's second largest economy.