In our daily life, we often come into contact with various scattering media, such as ground glass, biological soft tissues, clouds and fog. Ground glass can generally be considered as a surface scattering medium without thickness, that is, a random phase mask. But biological soft tissues such as chicken breast are volume scattering media with a non-negligible thickness. The propagation process of light in a volume scattering medium such as chicken breast is complicated and is affected by factors such as thickness and anisotropy factor. In experiments, researchers often choose ground glass as the scattering medium, and tend to extend the relevant conclusions directly to the volume scattering medium such as chicken breast. We compare and analyze their differences in imaging and scattering energy distribution between ground glass and volume scattering media based on the energy distribution. In addition, we have proposed and used an integral divergence angle measurement method to explore the conditions under which the two speckle distributions are approximately equivalent.