TiO2　and　ZrO2　inverse　opals,　as　well　as　used　as　photonic　crystals,　can　be　applied　to　the　dye　sensitized　solar　cells　(DSSCs),　photocatalysis,　and　so　on.　In　above　applications,　ordering　of　pores　in　inverse　opals　is　crucial　as　it　determines　the　application　effects　of　inverse　opals,　for　instance,　improving　light　use　efficiency.　In　this　paper,　the　factors　influencing　ordering　of　pore　structure　of　inverse　opals　are　discussed　by　observation　of　scanning　electron　microscope　(SEM).　It　is　found　that　the　macrosporous　ordering　in　inverse　opals　is　strongly　affected　by　that　of　PS　spheres　packing　in　opals　template,　heating　temperature　to　remove　template,　and　size　of　PS　spheres　used　to　assemble　template.