The invention relates to a preparation method and application of an organic-inorganic hybrid amorphous mesoporous titanium silicon material, in particular to a catalytic application in a cycloadditionreaction between carbon dioxide and epoxide. According to the preparation method provided by the invention, a heterogeneous catalyst with acid-base dual functions is prepared by a one-step method, the process of introducing alkaline groups through post-synthesis modification or loading is not required, the preparation process of the catalyst is simple, required raw materials are cheap and easilyavailable, the synthesis cost is greatly reduced, and the industrial application is convenient. In addition, the catalyst solves the problems of difficult separation of homogeneous system products andthe need to add cocatalyst in most heterogeneous systems in the traditional process. As a catalyst for the cycloaddition reaction between carbon dioxide and epoxide, good catalytic performance can beobtained under mild reaction conditions (with the temperature less than 140 DEG C, the pressure less than 2MPa, and the time less than 8h). After repeatedly recycling the catalyst, the catalyst can still be used for synthesizing cyclic carbonate with high conversion rate and high selectivity.