Employing molecular dynamics simulation to study the thermodynamic properties of liquid metal, Nickel, we find the existence of surface-induced layering at 1220K (this temperature is very close to the phase transition temperature between supercooled liquid and solid of this system, 1190K). We find that the particle density is enhanced and the length of model in the z direction (where the density is oscillated) of this system is strongly shrunk at this temperature. In addition, some close?packed structures (HCP and FCC) also dominate in the system at this temperature. Because of the appearance of layering structure at the liquid ? vapor interface, we believe that our results support the I. Iarlori?s theory, which explains the cause of layering structure formation. However, these results also show that this layering structure will be lost when the temperature of system is increased, which may be the consequence of thermal capillary waves.