To provide a sole sanitizer that disinfects pathogenic bacteria attached to footwear soles and prevents their dispersion when people enter their homes, etc.

The sole sanitizer is characterized in that it is provided with a lower casing 1, an upper casing 2 that swings or moves up and down with a rotary shaft 3 or a guide groove provided at the lower casing 1 and has a protruding piece 7 beneath its back surface, an extending spring 16 for setting the upper casing 2 at a fixed position relative to the lower casing 1, a disinfection liquid container 4 detachably provided at the bottom of the lower casing 1 in a desired direction and having a sprayer 5 at its end, a pusher 5a provided at the sprayer 5 of the disinfection liquid container 4, and an arc-shaped change mechanism A provided in the lower casing 1, between the pusher 5a and the protruding piece 7 located beneath the bottom surface of the upper casing 2, and displaced in a desired direction by a spring 12 upon vertical movements of the protruding piece 7.