Dark matter theories

Recent progress in the theories of dark matter is briefly reviewed, including the following topics. (1) Observational phenomena based on which dark matter (DM) is conjectured, and the reasons why DM is probably related to particle physics. (2) Dark matter properties and the models which contain DM, among which the popular supersymmetric and extra-dimensional models are taken as examples. (3) New features inferred from recent observations by Pamela, Atic and Fermi. (4) Discussions and perspectives.