Abstract: According to the metal transfer particularity of gas shielded flux cored wire,the high-speed photographic experiments with the laser as back light were designed,on which the metal transfer patterns and their existing conditions were summarized and described,respectively.Moreover,the characteristics of metal transfer were clarified.Compared with the transfer of solid wire,the metal transfer of flux-cored wire has such particularities: there is always an incompletely melting slag column between the end of electrode and welding pool,and its length depends on the melting point of flux-cored material.Because the melt-drop may adhere to the slag column,and the slag column has guiding property for the metal transfering,the slag column,in some extent,is favorable to stabilizing metal transfer and decreasing spatter while the short ciruiting transfer is in progress smoothly.