The invention discloses a method and system for identifying fingerprint. The method comprises: S1: adjusting a camera to focus the camera on a lens; S2: capturing continuously by the camera fingerprint images formed by a finger pressing the lens, and sending the fingerprint images to an image processing module; and S3: processing the fingerprint images by the image processing module so as to acquire fingerprints. In this way, only a common camera is required for acquiring the fingerprint according to the invention, which is easy to operate at a low cost.