Abstract: This paper investigates a bright nickel plating technique for the fabrication of micromirror.The edge effect problem of the electroplating is analysed.A sacrifice structure was applied to increase the speed of electroplating and reduce the edge effect.Through pulse micro-electroplating experiments,It was found that the edge effect could be controlled by varying the current density.At the same time,factors that affect the structure surface quality of electroplating were discussed;Some valuable experimental parameters were obtained.A smooth structure with the size of 625×500×2 μm³ was electroplated,which can be used to fabricate micromirror.the growth rate nickel is about 0.1μm/min,The average surface roughness is about 4.376nm.