Belgium was represented at the Eurovision Song Contest 1984 with the song " ", composed by Henri Seroka, with lyrics by Jacques Zegers, and performed by Zegers himself. The Belgian participating broadcaster, Walloon (RTBF), selected its entry through a national final.
=== === Walloon broadcaster (RTBF) had the turn to participate in the Eurovision Song Contest 1984 representing Belgium. It held the national final at its studios in Brussels and was presented by Danielle Sornin de Leysat, with ten songs participating. The running order was done alphabetically by the artist's name as RTBF did not want to be accused of favouring any song. The programme was broadcast live at 20:05 (CET) on Télé 2 and lasted for 40 minutes. Voting was done by a 50/50 split between an 12-member jury and 450 selected TV viewers. The jury consisted of three representatives from SABAM, three journalists, three representatives of the radio industry, and three representatives of the television industry. The results of the national final were then broadcast in a 10 minute-long show at 22:50 (CET) on RTBF 1. Only the top four placings were announced, with "Avanti la vie" being declared the winner.
On the night of the final Zegers performed 8th in the running order, following and preceding . At the close of the voting "Avanti la vie" had received 70 points from 11 countries (including maximum 12s from and ), placing Belgium joint fifth (with ) of the 19 competing entries. The Belgian jury awarded its 12 points to Ireland.