In the second half of the 1920s, became especially strong pressure and atheistic propaganda directed against all religious institutions, including Islamic. Islam, like other religions, has incurred heavy damage as a result of the fact that majority of mosques and Muslim schools were closed.

Until 1929, the official policy towards Islam was the most favorable in comparison with the line held in relation to other denominations and religious groups.

In 1960-1980 years of the Spiritual Administration of Muslims allowed to to publish the Koran, to produce the lunar calendar, involved with ensuring mosques objects of religious purpose; started publishing the magazine "Muslims of the Soviet East."

Mosques functioned in most of the large cities of Central Asia and Azerbaijan; however, their number has decreased from 25,000 in 1917 to 500 in 1970.

Long-term and repeated bans, of course, had an impact on the evolution of Islam in the Soviet Union, but they were unable to completely neutralize its development.