To study the construction method of the surface micro-hole arrays and the effect of lattice parameters on the surface flashover characteristics of the insulators, a couple of lattices are designed and constructed by laser spinning carving on cylindrical Poly Methy-Methacrylate(PMMA) insulators. Then，micro holes with the diameters of 300 μm and 200 μm are acquired by changing the laser parameters. Finally, four kinds of micro-hole lattices are obtained by the combination of hole diameters and the lattice structures. The Scanning Electron Microscopy(SEM) test and 3-D profile analysis of the surface morphology indicated that the designed arrays are obtained on the lateral surface of the cylindrical PMMA insulators by laser treatment with the hole diameters of 300 μm, 200 μm and 50 μm in depth. Surface flashover voltage test shows that construction of micro-hole array on the surface of insulator could enhance the flashover strength of the insulators efficiently(over 50% flashover voltages increase is obtained in the experiment); the flashover voltage increases with the decrease of hole scales, but has no obvious relationship with the array structure.