Abstract: We first explain the concept of dark matter,then review the history of its discovery and the evidence of its existence.We describe our understanding of the nature of dark matter particles,the popular dark matter models,and why the weakly interacting massive particles (called WIMPs) are the most attractive candidates for dark matter.Then we introduce the three methods of dark matter detection: colliders, direct detection and indirect detection.Finally,we review the recent development of dark matter detection,including the new results from DAMA,CoGent, PAMELA,ATIC and Fermi.