The invention provides an internet audio-video domain name resolution method and device; the method comprises: acquiring domain names in the set amount of audio-video URLs (uniform resource locators) in a set manner before playing of audio and video; subjecting the acquired domain names to DNS (domain name resolution) in set sequence to obtain corresponding IPs (internet protocols) of the domain names before playing of audio and video; in playing of video, visiting audio-video content to be played to play the audio and video by using the IPs. Before a user plays audio and video, domain name resolution is carried out; audio-video start time can be shortened, fewer domain name resolutions are performed during playing of the audio and video, and lag rate or lag frequency can be decreased.