In　order　to　join　the　similar　magnesium　alloy,　a　novel　Zn-Mg-Al　filler　metal　was　designed　and　applied　to　braze　AZ31B　plates　by　using　high-frequency　induction　brazing　technique.　The　microstructure,　phase　constitution　and　fracture　morphology　of　the　brazed　joint　were　investigated.　The　experimental　results　show　that　MgZn(2)　phase　in　the　original　filler　metal　is　completely　consumed　in　the　brazing　process.　Moreover,　alpha-Mg　solid　solution　and　alpha-Mg+MgZn　eutectoid　structure　formed　in　the　brazing　region　due　to　the　intensive　alloying　between　the　molten　filler　metal　and　the　base　metal　in　the　brazing　process.　Test　results　indicate　that　the　shear　strength　of　the　brazed　joint　is　56　MPa.　The　fracture　morphology　of　the　brazed　joint　shows　intergranular　fracture　mode,　where　crack　originates　from　the　hard　a-Mg+MgZn　eutectoid　structure.