The invention discloses an iris image acquisition device. The device comprises a control assembly, a light source, an image acquisition assembly and a data processing assembly, the control assembly isconfigured to control the light source to emit light to the eyes of a user. The image acquisition assembly comprises a rotating part, a first linear polarizing film and an imaging module; the rotating part is configured to drive the first linear polarizing film to rotate; the imaging module is configured to image the light which passes through the first linear polarizing film and is reflected bythe eyes and/or the glasses of the user so as to generate an iris image; the control assembly is configured to be used for controlling the rotating part to drive the first linear polarizing film to rotate and controlling the imaging module to acquire a plurality of iris images in the rotating process; the data processing component is configured to select an iris image to be identified from a plurality of acquired iris images. The iris image acquisition device can acquire a plurality of iris images and select the iris images after the reflected light of the glasses is weakened, so that the irisrecognition success rate is improved.