The　effect　of　flux-cored　ingredients　and　welding　parameters　on　arc　stability　of　ENiCrMo3T0-4　flux-cored　wires　were　investigated　by　Hanover　Analyzer.　It　was　found　that　with　the　ratio　of　CaO/(SiO2+TiO2)　decreased　in　flux-cored　ingredients,　the　lower　the　basicity　of　melt　slag　were,　the　better　the　welding　arc　stability　were.　Compared　with　standard　deviation　of　voltage　and　current,　coefficient　of　voltage,　current　and　burning　time　variability,　standard　deviation　of　short-circuiting　and　burning　time,　coefficient　of　short-circuiting　time　variability　can　reflect　welding　arc　stability　more　accurately.　In　the　range　of　normal　welding　process　parameters,　the　arc　stability　became　more　stable　with　the　welding　parameters　increase.　©　2017,　Editorial　Board　of　Transactions　of　the　China　Welding　Institution,　Magazine　Agency　Welding.　All　right　reserved.