Mirgasim Cheshmazer was Chairman of the Azerbaijan Democratic Party in 1954–1959, and a scientist.

During the period of the Azerbaijan People's Government, he was the commandant of the Tabriz loyalist units, Sayyed Ja'far Pishevari's assistant, and chairman of the Azerbaijan Radio Committee.

[2][3] From December 10, 1945, to January 15, 1946, he served as the commander of the Tabriz loyalist units.

[8][9] In 1946, at the initiative of S. J. Pishevari, Mirgasim Chashmazer, and others, the "Babak Resistance Unit" was formed to resist the entry of the Tehran army into Azerbaijan[10] After the dissolution of the Azerbaijan People's Government, he came to Baku.

There, he defended his academic work on "The Formation and Activity of the Azerbaijan Democratic Party" and obtained a doctoral degree in history sciences as a nominee for history.