To improve the properties of nanocrystalline nickel coating prepared by jet electrodepositing, laser remelting experiment was carried out and the effects of laser remelting on microsturcture and properties on coating were researched. The surface morphology, microstructure and microhardness of coatings were investigated using scanning electron microscopy (SEM), X-ray diffractometry (XRD) and microhardness measurement. Meanwhile, the corrosion behavior was studied. The results showed that the nickel coatings prepared by pulse jet electrodepositing owned a fine-grained structure (average grain size is 13.7 nm) with a smooth surface and high density under the optimum processing parameters. However, there were still some pores and other defects. After laser remelting, the grain size of coating was greatly diminished, the density of coating was also improved and the bonding state between the coating and substrate became metallurgical combination from mechanical combination. So the laser remelting sample had higher hardness, better corrosion resistance than jet electrodepositing coating did.