Short　circuit　arc　welding　parameters　and　waveform　control　are　researched　on　the　basis　of　IGBT　inverter　welding　power　supply.　Under　the　same　welding　current,　optimum　arc　voltage　will　decrease　with　the　increasing　of　welding　speed.　And　it　is　proved　that　hard　arc　is　more　stable　under　lower　voltage,　which　is　suitable　for　high　speed　welding.　The　relationships　among　energy　input,　arc　voltage　dropping　speed　and　arc　stability　are　studied,　and　it　is　demonstrated　that　a　lower　voltage　dropping　speed　will　lead　to　a　higher　arc　energy,　but　the　adjust　time　of　voltage　should　be　less　than　average　arc　time.　The　welding　experiments　prove　that　the　weld　appearance　and　fusion　are　good　when　the　welding　speed　is　1.5　m/min,　which　meet　the　requirements　of　container　manufacturing.