With　the　improvement　of　wireless　networks　and　the　capacity　of　terminal　devices,　the　relationship　between　people　and　networks　has　become　closer.　Device-to-Device　(D2D),　one　of　5G＇s　key　technologies,　has　the　potential　to　make　full　use　of　context-processing　capabilities　of　network　and　user　behaviors.　Since　handheld　devices　are　closely　related　to　the　social　behaviors,　there　have　been　many　methods　utilizing　the　data　of　users＇　daily　life　to　optimize　the　performance　of　the　D2D　communication.　Among　these　factors,　the　movement　of　users　which　may　lead　to　the　instability　of　the　D2D　communication　is　often　ignored.　We　focus　on　the　instability　of　the　D2D　communication　caused　by　the　movement　of　users　and　propose　a　model　of　mode　switching　of　D2D　pairs.　In　addition,　We　propose　a　mobility-aware　joint　resource　allocation　and　power　allocation　algorithm　(MARP)　to　optimize　the　channel　resources　allocation　and　power　allocation　and　improve　the　performance　of　the　system.　The　simulation　results　verify　the　effectiveness　of　the　proposed　algorithm,　©　2019　IEEE.