Electrochemical　corrosion　behaviors　of　Zn4Al3Mg-xIn　solder　alloys　were　studied　by　potentiodynamic　polarization　measurements.　And　the　high　-temperature　oxidation　resistance　of　the　solders　was　also　investigated　by　thermogravimetric　analysis　(TGA).　The　results　show　that　the　corrosion　potential　of　Zn4A13Mg　solder　is　less　than　-1.15　V,　which　means　the　corrosion　tendency　of　Zn4A13Mg-xIn　alloys　cannot　be　neglected.　The　corrosion　potential　decreases　with　the　increase　of　In　content.　Obvious　regional　corrosion　and　pitting　corrosion　are　observed　on　the　surface　of　Zn4Al3Mg-xIn　alloys　by　SEM.　The　TGA　results　indicate　that　slow　progress　of　oxidation　takes　place　at　260　degrees　C,　and　Zn4Al3Mg-xIn　alloys　show　good　oxidation　resistance.