In 1981, Mirziyoyev graduated from the Tashkent Institute of Irrigation and Melioration. He holds a Candidate (Ph.D.) degree in Technological Sciences. He joined the Communist Party of the Soviet Union in the late 1980s. In early 1990, he was elected as a deputy of the Supreme Soviet of the Uzbek SSR's last legislative body before the independence of Uzbekistan in 1991. The ceremony took place in the Senate and State Legislative Assembly Building in Tashkent.
