A　series　of　porous　Si/Si-Ti　alloy　were　prepared　by　magnesium　reduction　process　with　Ti-containing　silica　molecular　sieves　(Ti-SiO2)　as　the　precursor.　The　morphologies　and　structures　of　Si/Si-Ti　alloy　were　characterized　by　X-ray　diffraction　(XRD),　scanning　electron　microscopy　(SEM),　transmission　electron　microscopy　(TEM)　and　Fourier　transform　infrared　spectroscopy　(FT-IR).The　electrochemical　properties　of　the　composites　as　anode　materials　for　lithium-ion　batteries　were　evaluated　by　Galvanostatical　text.　The　results　show　that　the　effect　of　volumetric　expansion　wasrelieved　because　porous　structure　provides　sufficient　buffer　space.　In　addition,　the　existence　of　Si-Ti　alloy　improved　the　conductivity　of　the　composite　materials.　The　sample　achieved　remarkable　electrochemical　performance　with　a　capacity　of　801　mAh/g　at　420　mA/g　after　50　cycles.　©　2016,　Chongqing　Functional　Materials　Periodical　Press　Co.　Ltd.　All　right　reserved.