The eighth season of La Voz Kids premiered on 15 April 2023 on Antena 3. This season, David Bisbal, Aitana, and Sebastián Yatra all reprised their roles as coaches from the previous season. Rosario Flores returned as a coach for her seventh season after a one-season absence, replacing Pablo López. However, Pablo López filled in for David Bisbal for the first four episodes of the blind auditions to select artists for David's team. Eva González and Juanra Bonet remained as the host of the program.
On 8 July, Rubén Franco was announced as the winner of this season, marking Sebastián Yatra's first and only win as a coach. Also, this was the second occurrence where as stolen artist won the entire season (Franco was originally from David Bisbal's team before he joined Team Yatra), following Irene Gil in season 5.
In this season, three out of the four coaches from the previous season remained as coaches. David Bisbal returned for his seventh season as a coach, & Aitana and Sebastián Yatra both returned for their second seasons as coaches. Rosario Flores returned after one-season absence on the panel, replacing Pablo López. However, Pablo López filled in for David Bisbal for the first four blind audition episodes.
Eva González and Juanra Bonet continued hosting on the program.
Each coach needs to recruit 15 young artists into their teams. Like last season, each coach has three blocks. The blocked coach's chair won't turn around. Two coaches can be blocked in one audition. At the end of the blind auditions, Aitana didn't use her third block, and David Bisbal (or Pablo López) only used their block once.
Pablo López sat in David's chair to select artists for his team for the first four episodes of the blind auditions.
The battles commenced 3 June 2023. The coaches can steal two losing artists from other coaches. In addition, coaches' advisors help them on deciding who will be advancing to the next round; Rosa López for Team David, La Mari for Team Rosario, Dani Fernández for Team Aitana, and Rayden for Team Yatra. Contestants who won their battle or were stolen by another coach advanced to the Knockouts.
The knockouts round started on 17 June. Known as "El Asalto" in Spanish, in this round each teams' seven participants perform, and only four from each team go through to the semi-final. The advisors from the battles continued to help the coaches in their choices. David and Aitana's team's performances aired on 17 June and Yatra and Rosario's team's performances aired on 24 June.