Abstract: Giant magnetostriction effect and magnetic properties of the amorphous alternant Tb/Fe/Dy（sample A） and Fe/Tb/Fe/Dy（sample B） nano-multilayer films had been studied.The magnetic hysteresis loops show that sample B has better magnetic properties than sample A,and easy magnetic direction changes from perpendicular to the film plane（sample A） to parallel to the film plane（sample B）.The sample B has good low-field giant magnetostriction,and it is five times higher than sample A at H=0.12T from 16ppm to 82ppm.