Objective To study the effect of different ways of filtration on the performance of magenta UV-curable inkjet ink. Methods The magenta UV-curable inkjet ink was prepared according to previous formula. Polyvinylidene fluoride microporous membranes with pore size of 0.45 μm and 0.22 μm were selected to filter the ink by buchner funnel. One method was utilizing single monolayer membrane, the other was layered filtration using single monolayer membrane followed by a second kind of monolayer membrane. Results After layered filtration, the pigment particle size in the ink was less than 0.15 μm, and the distribution was the narrowest. The viscosity and surface tension changed a little, and were 18.5 mPa·s and 34.2 mN/m, respectively. The light curing time remained 1.5 s. Conclusion This study showed that layered filtration reduced the pigment particle size, but had little effect on the other performance indices of magenta UV-curable inkjet ink.