Mexico was represented at the OTI Festival 1974 with the song "", written by Roberto Cantoral, and performed by . The Mexican participating broadcaster, Televisa, selected its entry through a national televised competition with several phases. The song, that was performed in position 13, placed tenth out of 19 competing entries with 3 votes. In addition, Televisa was also the host broadcaster and staged the event at the of the in Acapulco, after winning the previous edition with the song "" by .
Televisa held a national competition with five televised qualifying rounds and a final to select its entry for the 3rd edition of the OTI Festival. This third edition of the National OTI Festival featured forty songs, of which nine reached the final.
The shows were presented by Raúl Velasco, and were broadcast on within the show . The musical director was , who conducted the orchestra when required.
The five qualifying rounds were held on Sundays 1, 8, 15, 22, and 29 September 1974. The nine highest-scoring entries among the forty competing advanced to the final.
The final was held on Sunday 6 October 1974. The winner was "", written by Roberto Cantoral, and performed by . The festival ended with a reprise of the winning entry.
On 26 October 1974, the OTI Festival was held at the of the in Acapulco, hosted by Televisa, and broadcast live throughout Ibero-America. Enrique Cáceres performed "" in position 13, placing tenth out of 19 competing entries with 3 votes.