The present disclosure relates to a method and an apparatus for determining a karaoke singing score, and belongs to the technical field of karaoke singing systems. The method includes: capturing a singing audio by an audio capture device upon detection of a karaoke singing instruction to a target song; acquiring a plurality of time units obtained by dividing a preset voice period of the target song; for each time unit, performing time offset adjustment on the time unit based on a preset adjustment duration to obtain at least one offset time unit, determining pitch values corresponding to the time unit and each time offset unit respectively in the captured singing audio, scoring each of the determined pitch values based on a preset reference pitch value of the time unit, and determining the highest score as a score corresponding to the time unit; and determining a total score of the singing audio based on the score corresponding to each time unit. The method and the apparatus have the advantage that scoring accuracy of the singing audio is improved.