The picture of the embroidery on the «ruchnik» (handtowel) had been found in the pre-World War II archives of the Belpramsavyet.

The embroidery had been made in 1917 by peasant Ms. Matrona Markyevich of the village Kastsilishcha of the Sennin region, and had been named «The Rising Sun».

Artist M. I. Gusyew had prepared the project of the BSSR flag, basing it on the embroidery, with several symbolic elements added.

After the formation of the Byelorussian SSR, the lettering ССРБ (SSRB) was added in gold to the top hoist.

During the 1940s, the hammer and sickle and red star were removed from the flag, and a gold border was added to the letters.