The participation of Belarus in the Junior Eurovision Song Contest first began at the inaugural Junior Eurovision Song Contest in 2003 which took place in Copenhagen, Denmark. The Belarusian Television and Radio Company (BTRC) a member organisation of the European Broadcasting Union (EBU) have been responsible for the selection process of their participants since their debut. The first representative to participate for the nation at the 2003 contest was Volha Satsiuk with the song "Tantsuy", which finished in fourth place out of sixteen participating entries, achieving a score of one hundred and three points. Belarus is one of two countries to have never missed an edition of the contest, the other one being the Netherlands, and have won twice in 2005 and 2007. They are also one of the two countries to have participated first in Junior Eurovision and then in the adult one. They hosted the contest at the Minsk-Arena in 2010 and again in 2018.
Belarus chose Dmitry Koldun with the song "Work Your Magic", written by Karen Kavaleryan and composed by Philip Kirkorov, to represent the nation at the Eurovision Song Contest 2007 in Helsinki, Finland.
Belarus was represented by Ruslan Alekhno in the Eurovision Song Contest 2008 with the song "Hasta La Vista".
Russia participated in the Junior Eurovision Song Contest 2008 in Lemesos, Cyprus. The Russian entry was selected through a national final, organised by Russian broadcaster All-Russia State Television and Radio Company (VGTRK). The final was held on 1 June 2008. Mikhail Puntov and his song "Spit angel" won the national final, getting 10.81% of votes.
The Junior Eurovision Song Contest 2010 was the eighth edition of the annual Junior Eurovision Song Contest and took place in Minsk, Belarus. It was held on 20 November 2010. The contest was won by Vladimir Arzumanyan from Armenia with the song Mama. This gave Armenia its first Junior Eurovision victory and its first victory in any Eurovision contest.
Russia participated in the Junior Eurovision Song Contest 2009 in Kiev, Ukraine. The Russian entry was selected through a national final, organised by Russian broadcaster All-Russia State Television and Radio Company (VGTRK). The final was held on 31 May 2009. Ekaterina Ryabova and her song "Malenkiy prints" won the national final, getting 12.07% of votes.
The Belarus entry for the Eurovision Song Contest 2010 was organised by BTRC. It had been originally planned for ONT to take over after criticism over BTRC's selection methods. However, as ONT's application for the European Broadcasting Union (EBU), the contest's organisers, had been rejected, BTRC again selected the Belarusian entry for the seventh year. An internal selection was held by the broadcaster after a public call for song submissions, and after 41 entries were received the band 3+2 were selected. The band performed the song "Butterflies" at the contest, having changed their song on 19 March from their initial choice "Far Away".
Russia participated in the Junior Eurovision Song Contest 2006 in Bucharest, Romania. The Russian entry was selected through a national final, organised by Russian broadcaster All-Russia State Television and Radio Company (VGTRK). The final was held on 4 June 2006. Tolmachevy Twins and their song Vesenniy Jazz won the national final.
Russia participated in the Junior Eurovision Song Contest 2007 in Rotterdam, Netherlands. The Russian entry was selected through a national final, organised by Russian broadcaster All-Russia State Television and Radio Company (VGTRK). The final was held on 3 June 2007. Alexandra Golovchenko and her song 'Otlichnitsa' won the national final.
Belarus participated in the Junior Eurovision Song Contest 2011. The Belarusian entry for the 2011 contest was selected through The Republican Children’s Contest, organised by the Belarusian broadcaster National State Television and Radio Company of the Republic of Belarus.
Russia participated in the Junior Eurovision Song Contest 2012 in Amsterdam, Netherlands. The Russian entry was selected through a national final, organised by Russian broadcaster All-Russia State Television and Radio Company (VGTRK). The final was held on 3 June 2012. Lerika and her song "Sensatsiya" won the national final, getting 12.34% of votes.
Russia participated in the Eurovision Song Contest 2012 in Baku, Azerbaijan. The Russian entry was selected through a national final, organised by the Russian broadcaster RTR. Buranovskiye Babushki represented Russia with the song "Party for Everybody", which qualified from the first semi-final and went on to place 2nd in the final, scoring 259 points.
Belarus participated in the Junior Eurovision Song Contest 2014 in Marsa, Malta. The Belarusian entry was selected through a national final, organised by Belarusian broadcaster National State Television and Radio Company of the Republic of Belarus (BTRC). The final was held on 29 August 2014. Nadezhda Misyakova and her song "Sokol" won the national final, scoring 15 points.
Belarus participated in the Junior Eurovision Song Contest 2013 in Kyiv, Ukraine. The Belarusian entry was selected through a national final, organised by Belarusian broadcaster National State Television and Radio Company of the Republic of Belarus (BTRC). The final was held on 4 October 2013. Ilya Volkov and his song "Poy so mnoy" won the national final, scoring 18 points.
Russia participated in the Junior Eurovision Song Contest 2013 in Kyiv, Ukraine. The Russian entry was selected through a national final, organised by Russian broadcaster All-Russia State Television and Radio Company (VGTRK). The final was held on 2 June 2013. Dayana Kirillova and her song "Mechtay" won the national final, getting 12.19% of votes.
Russia participated in the Eurovision Song Contest 2016 with the song "You Are the Only One" written by Philipp Kirkorov, Dimitris Kontopoulos, John Ballard and Ralph Charlie. The song was performed by Sergey Lazarev who was internally selected by the Russian broadcaster All-Russia State Television and Radio Broadcasting Company (VGTRK) to compete at the 2016 contest in Stockholm, Sweden. Lazarev's appointment as the Russian representative was announced on 10 December 2015, while the song, "You Are the Only One", was presented to the public on 5 March 2016.
Belarus participated in the Junior Eurovision Song Contest 2016. The Belarusian entry for the 2016 contest in Valletta, Malta was selected through a national final organised by the Belarusian broadcaster National State Television and Radio Company of the Republic of Belarus (BTRC). A national final of ten competing acts participated in a televised production where the winner was determined by a 50/50 combination of votes from jury members made up of music professionals and a public telephone vote. On 26 August 2016, Alexander Minyonok was selected to represent Belarus with the song "Musyka moikh pobed ".
Russia participated in the Junior Eurovision Song Contest 2016 which took place on 20 November 2016, in Valletta, Malta. The Russian broadcaster Russia-1, owned by the All-Russia State Television and Radio Broadcasting Company (VGTRK) was responsible for organising their entry for the contest. Sofia Fisenko won the national final on 16 August 2016 with the song "Zhivaya voda". On 6 October, the Russian organisation team opted to change the name of the entrant to Water of Life Project, with the song also changing to "Water of Life".
Belarus participated in the Junior Eurovision Song Contest 2019, held in Gliwice, Poland on 24 November 2019. The Belarusian entry for the 2019 contest was selected through a national final organised by the Belarusian broadcaster National State Television and Radio Company of the Republic of Belarus. It saw ten competing acts participating in a televised production where the winner was determined by a 50/50 combination of votes from a jury made up of music professionals and a public vote. Liza Misnikova represented Belarus with the song "Pepelny(Ashen)".
Russia participated in the Junior Eurovision Song Contest 2020 in Warsaw, Poland. Russian broadcaster VGTRK was responsible for the country's participation in the contest, and organising the Russian national final. Sofia Feskova was selected, and she achieved 10th place with 88 points in the final of the Junior Eurovision Song Contest.
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