A data presentation method and system is provided. The method includes, when video data is playing, receiving a triggering instruction for pausing or stopping, and acquiring a relative playback time point at which the video data is playing when the triggering instruction is received. The method also includes acquiring at least one piece of advertisement data that includes the relative playback time point and is associated with the video data, and superimposing, on a page of video data corresponding to the relative playback time point, prompt information of the acquired at least one piece of advertisement data. According to the data presentation method provided in the embodiment, to-be-presented advertisement data and video data are separated, which avoids operation complexity caused by synthesizing the advertisement data and the video data. In addition, multiple pieces of advertisement data can be presented at a same moment.