Born in Bokhtar District in 1946, Dostiev served in the Soviet Army from 1966 until 1968 before pursuing a career in agriculture. Dostiev worked on a kolkhoz (communal farm) and went on to study entomology at the Agricultural University of Tajikistan, graduating in 1974. In 1977 he became the chief agronomist at the Qurghonteppa Department of Agriculture, and in 1980 he became head of that department.
In 1992, as the Soviet Union collapsed, Dostiev joined the Sitodi Melli (Popular Front), an armed militia, becoming secretary of the regional executive committee, and in November of that year was appointed to the Tajik Supreme Soviet as first deputy. The next year he founded the People's Party of Tajikistan (now the People's Democratic Party of Tajikistan), serving as chair until 1998.
In 1995 he was elected to the Supreme Assembly (Majlisi Oli), and in 1996 he was appointed deputy chair of the assembly, a position he held for four years. He also served as deputy of the Commission for National Reconciliation in 1997. In 2000, he was elected to the assembly's lower chamber, where he served as deputy parliamentary chair.
- Abdullaev, Kamoludin & Akbarzaheh, Shahram (2010). Historical Dictionary of Tajikistan. Scarecrow Press. p. 116. ISBN 9780810860612.
- Список руководителей дипломатических и консульских представительств зарубежных государств в России (in Russian). Ministry of Foreign Affairs (Russia). Archived from the original on 23 May 2008. Retrieved 2008-07-05.