A method and an apparatus for adjusting photography parameters are provided. The method includes: determining a pupil size of a person; and adjusting one or more photography parameters according to the pupil size. The pupil size of the person is determined, and then one or more photography parameters such as the aperture size may be adjusted automatically according to the pupil size of the person. Since a current pupil size is subject to a light intensity in current surroundings, the photography parameters of a photographic device may be adjusted automatically and efficiently based on the pupil size.