The experiment of laser remelting of crystalline Ti47Cu38Zr7.5Fe2.5Sn2Si1Ag2 alloy matrix by a fiber laser with a power of 500 W is conducted, and the effects of different processes on the molten pool morphology and crystallization are investigated. The results show that, as for the single track remelting process, the amorphous microstructure occurs easily in the molten pool and the molten pool morphology is gradually transformed from the coronal shape to the funnel shape with the decrease of scanning speed. As for the overlap remelting process, the crystallization belt in the heat-affect zone induced by weld overlap is formed in the remelting zone when the scanning width is large, but when the scanning width is relatively small, the pool width is close to the scanning width and the remelting zone is basically amorphous due to the significant heat accumulation effect. In the surface scanning process, the keyhole effect is prominent due to thermal accumulation, the penetration depth of molten pool increases significantly, and there occurs a small amount of pores at the bottom of molten pool.