PROBLEM TO BE SOLVED: To improve detection accuracy of a pulse wave.SOLUTION: A pulse wave detection device 10: acquires an image on which an organism is imaged extracts a biological area included in the image divides the biological area into a plurality of blocks and calculates a representative value of a pixel value of each pixel included in each of the blocks for each block. In addition, the pulse wave detection device 10 extracts a block in which difference between representative values of the blocks corresponding to each other between frames of the image is equal to or less than a predetermined threshold value, and detects a pulse wave of the organism from a pixel value of each pixel included in the block extracted.
