A sterilizing apparatus having both excellent safety and operability is provided. A sterilizing apparatus (1) according to an aspect for carrying out the present invention is a sterilizing apparatus (1) that radiates light including ultraviolet rays onto an affected area (6), wherein first wavelength light (Lλ1) having a peak wavelength in a wavelength range of 190 nm or more and 230 nm or less, and second wavelength light (Lλ2) having a peak wavelength in a wavelength range of 400 nm or more and 780 nm or less are emitted.