The three-dimensionally layered silicate AMH-3 was obtained in the absence of titanium using silica sol as silica source. Focused on the system, the effect of different synthesis conditions were investigated, and the physicochemical properties of the materials obtained were characterization by XRD, SEM and TG-DSC methods. It was confirmed that the silica source is critical for the formation of AMH-3, the molar ratios of Na2O/SrO and SiO2/SrO also play important roles on synthesis of AMH-3, the results of XRD and TG-DSC analyses indicate that the framework structure is intact after calcination at 450℃.