Electrostatic oil fume purifier applies high-voltage electro static particles removing principle. Pre-filter with round hole-array stops large particles of oil fume. Ionizer and oil collector are separately designed, hence High-Voltage Saw-Shape stainless steel ionizer can ensure quick ionization, and plate-matrix collector can effectively remove oil particles. When oil fume reaches the ionization zone, oil fume particles are quickly charged with electronic couples. Then those charged particles are attracted by plate-matrix while they are passing through the 2nd electronic field. The purifier can reach to 95% oil fume reduction rate.