Synthesis process of nanometer mesoporous gold complex

The present invention relates to the synthesis process of nanometer mesoporous gold complex. The synthesis process includes: dissolving chlorauric acid in solution prepared with template agent, water and hydrochloric acid via strirring at 0-60 deg.c for 0.3-1 hr; dropping ethyl silicate into the solution to obtain the sol of nanometer mesoporous gold complex and crystallizing statically at 0-160 deg.c for 24-72 hr; filtering, washing and drying to obtain nanometer Ag/SiO2 mesoporous complex cake; and roasting at 450-600 deg.c in air atmosphere for eliminating the template agent to obtain the nanometer mesoporous gold complex. The present invention has simple reaction process, simple operation, low reaction temperature, wide temperature range, etc. and the prepared nanometer metal particle has size of 2.5-20 nm.