Screen operation trace and sound input synchronous storage and processing method, system and terminal

The invention discloses a screen operation trace and sound input synchronous storage and processing method, system and terminal. The method includes the following steps: collected operation trace data is decomposed into a plurality of different operation actions as per a predetermined action cycle, and simultaneously, sound data corresponding to each decomposed operation action is recorded as per the predetermined action cycle to form independent sound files corresponding to relative operation actions; a server is used for merging and processing a plurality of continuous operation actions sent from a mobile terminal and sound files corresponding to all the operation actions into a playable video file; and the mobile terminal obtains the video file from the server for playback. According to the invention, a novel function, namely synchronous screen operation trace and sound input is added to the mobile terminal with the function of an electronic drawing board, so that a user can record sound while recording the screen trace, trace operation and sound synchronous recording and playback can be realized, and convenience is provided for users.