Wireless　sensor　networks　have　played　an　important　role　in　many　applications,　where　sensors　in　the　network　can　automatically　collect　and　transmit　information　in　an　environment　without　much　human　maintenance.　To　enhance　the　adaptability　of　sensors,　people　produce　mobile　wireless　sensors　through　fixing　wireless　sensors　on　mobile　vehicles　or　robots.　The　same　as　static　wireless　sensors,　since　the　energy　of　mobile　wireless　sensors　is　still　supplied　by　the　battery,　their　energy　management　has　a　great　impact　on　their　lifetime.　Different　with　static　wireless　sensors,　the　mobility　of　mobile　wireless　sensors　gives　us　a　new　perspective　to　achieve　the　efficient　energy　management.　In　this　paper,　a　decentralized　self-adaptive　approach　is　proposed　for　mobile　wireless　sensors,　which　enables　sensors　in　a　mobile　wireless　sensor　network　to　adapt　their　locations　according　to　the　information　transmission　regularity　in　the　network　so　as　to　reduce　their　energy　consumption　for　the　information　transmission.　The　experimental　results　indicate　that　after　employed　the　proposed　approach　to　adapt　locations,　the　energy　consumption　for　the　information　transmission　of　sensors　in　a　mobile　wireless　sensor　network　can　be　greatly　reduced　and　their　lifetime　is　extended.