A blood image analyzer is disclosed that comprising: an image capturing unit for capturing a blood image of a sample; an analyzing part for analyzing the sample based on the blood image; an identification information reader for reading, from the sample, identification information assigned to the sample; a transportation part for transporting the sample to the identification information reader and the image capturing unit; a first detector for detecting the sample at a first detection position on a pathway of the sample transported by the transportation part; a display; and a controller for controlling the display, so as to display, based on a detection result by the first detector, a screen including a first identification information display region, wherein the first identification information display region displays identification information of the sample being at the first detection position.