A numerical calculation based on phase field method was developed to describe two-dimensional solidification and evolution of the interface morphology as well as the effects of phase field parameters on pure matter using succinonitrile.The results show that with increasing anisotropy values,the cell can be evolved into developed dendrites gradually,while the nuclei can be grown into the cell with γ of 1/15.With increasing undercooling rate,the second dendrite occurs in the structure and grows,where the tip velocity at steady state becomes faster and faster;with the increase of coupling coefficient,the tip velocity at steady state can be improved,however,the interfacial stability can be decreased.