Abstract: TS-1 molecular sieves were synthesized through two different methods，one was using complex to improve the stability of titanium source and the other was the traditional method. These samples were characterized by using SEM，XRD，micro-structural analysis and IR，and their catalytic performance for propylene epoxidation with high concentration of hydrogen peroxide was investigated. Results showed that the TS-1 samples prepared by the two different methods have the same frame structure，shape，surface area and pore size distribution etc.，and their catalytic performance is also appropriately the same. However，the grain size form the traditional method is not uniform，while that from the method using complex to improve the stability of titanium source appears as lamellate uniform TS-1 molecular sieve. These results provide a possibility for the further study of TS-1 preparation and its industrial application through a relatively inexpensive synthetic process.