The present invention is applicable to the field of multimedia technologies and provides a record file editing method and system, where the method includes: performing fragmentation on an audio file to acquire multiple audio fragments; performing fragment cutting on the multiple acquired audio fragments; storing a fragment time period, a quantity of audio fragments, a fragment cutting time point, and an audio fragment number in a preset record file of the fragment cutting time point; reading each fragment cutting time point from the record file of the fragment cutting time point, performing time mapping on the fragment cutting time point, and storing, in an array, a new fragment cutting time point that is obtained after the mapping; and reading a prestored interaction mapping file between a document and audio, and performing an adjustment on a time point in the interaction mapping file between a document and audio according to the new fragment cutting time point. According to the present invention, a problem that inconsecutive edited document files and audio are not synchronized during playback can be effectively resolved.