Recently, postactivaiton potentiation has been widely studied. Numerous studies have indicated that postactivaiton potentiation can increase subsequent performance. The purpose of this paper was to discuss the physiological mechanism and evidence of postactivaiton potentiation. Some of the previous studies indicated that dynamic and isometric contraction of the skeletal muscles can induce postactivaiton potentiation. However, the others have yielded conflicting results. Further studies were needed to examine the issues including the effect of different factors (athlete's training status, prescription of the loading exercise, recovery time, and assessing method of postactivaiton potentiation) on postactivaiton potentiation benefit.