The　existence　behavior　of　Sr　and　Nd　elements　in　microstructure　of　Mg-6Al-2Sr-xNd　magnesium　alloy　was　observed,　and　the　effects　of　Nd　content　on　the　mechanical　properties　of　the　alloy　at　room　temperature　were　investigated.　The　results　show　that　net-like　Al4Sr　phase　is　distributed　along　the　grain　boundary,　and　particle-like　or　acicular　Al11Nd3　phase　is　precipitated　from　both　grain　and　grain　boundary.　The　increase　of　strength　of　the　alloys　is　attributed　to　the　Al4Sr　phase　inhibiting　the　sliding　of　grain　boundaries　and　the　Al11　Nd3　phase　pining　the　dislocation　effectively.　The　maximum　values　of　tensile　strength,　yield　strength　and　elongation　of　the　alloys　can　be　observed　with　1.0%　Nd　content.