Abstract: Several high-speed images of arc shape and globule transfer are obtained while using laser to be the background light of the imaging system.The arc shape and globule transfer modes of two kinds of newly researched weld wire attached to the steel with the yield intensity of 980 MPa class are studied.On condition of typical welding parameters,the MIG welding method which uses different proportions of mixture of Ar and He as protecting gases is used to conduct contrastive experiments in the arc shape and globule transfer modes between the welding wire developed and the common wire H08Mn2SiA.The results show that the weld wire is able to meet the need of mechanical capability of deposited metal,but superior in globule transfer performance to the common wire,and provides important basis for experiments of welding procedure performance of filler metals and practical applications.