Abstract: In this paper,the effects of different nano-metal contents on the saturation magnetization,remanient magnetization,rectangular ratio and coercivity of Fe,Co,Ni/ mesoporous TiO₂ composites prepared by sol-gel method.The magnetic properties including magnetic hysteresis loop and related parameters were measured by vibrating sample magnetometer（-7.96×10⁵A·m^-1＜H＜7.96×10⁵A·m^-1）.The results show that the magnetic properties of TiO₂ mesoporous composites respond to the change of nano-metal content complexly.