Serbia participated in the Junior Eurovision Song Contest 2020 in Warsaw, Poland.

Radio Television of Serbia (RTS) selected Petar Aničić, who achieved 11th place with 85 points.

In the 2019 contest, Serbia placed 10th with Darija Vračević and the song "Podigni glas".

[5] On 25 September 2020, RTS announced that Petar Aničić would represent Serbia in the contest with the song "Heartbeat".

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.