The wrought Mg-Y magnesium alloys with varied yttrium content were fabricated by permanent mold casting and plain compressing.The effects of yttrium content and temperature on mechanical anisotropy of Mg-Y alloys were investigated.The results reveal that the alloy containing Y presents the apparent mechanical anisotropy with compressed along radial（TD）and axial（ED）of cylinder samples of Mg-Y alloys.However

the anisotropy is decreased with increasing in yttrium content and temperature.At room temperature

the difference of strength between TD and ED directions is decreased from 82 MPa to 34 MPa when yttrium content is increased from zero to 3.02%.At 300℃

the two curves of the stress-strain diagram compressed along TD and ED direction almost completely coincide

showing the disappearance of mechanical anisotropy.The decrease of the mechanical anisotropy is attributed to the weakened{0002}basal texture and the activation of non-basal slips with increasing in yttrium and temperature.