An information retrieval method and device

The invention discloses an information retrieval method and device, and the method comprises the steps: detecting to-be-retrieved information input by a user, inquiring target content in a target textstream matched with the to-be-retrieved information, and enabling the target file to comprise an audio and video file, a first text stream, and a second text stream, Wherein the first text stream isobtained by collecting sound information in an audio and video file recording process, the second text stream is obtained by collecting screen body content of a display screen in the audio and video file recording process, the first text stream and the second text stream are associated with a recording time axis of an audio and video file, and the target text stream is the first text stream or thesecond text stream; And obtaining link information which is matched with the target content and is used for opening the audio and video file. By implementing the embodiment of the invention, the audio and video file can be pla