To　promote　the　magnetostrictive　sensibility　of　TbDy-Fe　films　at　low　magnetic　field,　TbDy-Fe　giant　magnetostrictive　films　was　fabricated　by　ion　beam　sputtering　deposition(IBSD).　The　effects　of　composite　of　Fe　film　with　TbDy-Fe　single-layer　film　as　well　as　with　TbDy-Fe/Fe　coupling　multilayer　and　field-sputtering　on　their　magnetostriction　were　investigated　respectively.　Magnetic　hysteresis　loops　were　measured　by　using　a　vibrating　sample　magnetometer.　Deflection　of　the　film　cantilever　free　end　was　measured　by　capacitance-displacement　micrometer,　and　then　magnetostriction　coefficient　A　was　calculated.　The　results　showed　that　the　easy　axis　of　the　films　including　Fe　film,　TbDy-Fe　single-layer　and　TbDy-Fe/Fe　composite　films　fabricated　by　IBSD　was　parallel　to　the　film　plane.　At　low　magnetic　field,　the　magnetization　and　permeability　of　TbDy-Fe/Fe　composite　film　were　higher　than　TbDy-Fe　single-layer　film　(The　magnetization　of　TbDy-Fe/Fe　composite　film　was　173%　larger　than　which　of　TbDy-Fe　single-layer　film　at　100　kA/m).　The　composite　of　Fe　film　with　TbDy-Fe　single-layer　film　as　well　as　with　TbDy-Fe/Fe　coupling　multilayers　promoted　the　magnetostriction　of　the　films.　Fe　film　(180　nm)　+　TbDy-Fe/Fe　coupling　multilayer　(640　nm)was　fabricated　during　field-sputtering.　In　this　case,　induced　magnetic　anisotropy　was　formed　in　the　short　axis　direction　of　the　film　plane,　so　that　magnetostriction　was　further　promoted　and　its　value　of　A　reached　to　650　×　10-6　at　150　kA/m.