Alinur Khamzin and Beknur Zhanibekuly were selected to represent Kazakhstan with the song "Ertegı älemı (Fairy World)".

[5] Khabar announced during a press conference on 29 September 2021 that artists will be able to submit their applications for the national final until 6 October 2021.

[6] The online semi-final took place between 8 and 12 October 2021 where users were able vote for their favorite artists on Khabar's official website.

[8][9] The final took place on 6 November 2021 in Nur-Sultan,[10] where ten acts performed their candidate Junior Eurovision songs written for them by composers directly invited by Khabar in a televised production.

[11][12] Beknur Zhanibek and Alinur Khamzin were tied for the first place and the tie was to be decided by the jury, however after consultation with the composers of both songs it was ultimately decided that Zhanibek and Khamzin would both represent Kazakhstan with the song "Ertegı älemı", retitled as "Ertegı älemı (Fairy World)".

The second phase of the online voting took place during the live show and began right after the last performance and was open for 15 minutes.