Lead　zirconate　titanate　(PZT)　films　have　been　extensively　investigated　for　many　applications:　the　nonvolatile　memory　devices　based　on　their　remarkable　ferroelectric　properties,　the　microelectromechanical　system　(MEMS)　based　on　their　piezoelectricity　as　well　in　sensors　as　in　actuators.　In　this　paper,　we　inject　charges　into　PZT　thin　films,　and　then　the　charge　storage　and　transportation　through　PZT　thin　films　were　observed　by　electric　force　microscopy　(EFM).　Results　were　studied　and　charging　mechanisms　were　proposed.　(c)　2008　Elsevier　B.V.　All　rights　reserved.