The ordered macroporous silica was synthesized using PMMA latex sphere colloid crystal as template and sol of tetrarethyl orthosilicate,water,ethanol and hydrochloric acid as filling fluid.The sol was synthesized according to the volume ratio of Si(OEt) ₄∶H₂O∶EtOH∶HCl=6∶3∶4∶1. The latex spheres were removed by calcinations. Set the temperature program as follows: ramp the temperature at 2℃/min from the room temperature to 300℃, maintain it at 300℃ for 2 hours, ramp the temperature at 2℃/min from 300℃ to 550℃, maintain it at 550℃ for 10 hours, ramp the temperature at 10℃/min from 550℃ to the room temperature.