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Efficient process of explosion synthesis has been established for the synthesis of anatase and rutile as well as their mixtures. The powders were characterized by X-ray diffraction (XRD), BET surface areas. The results showed that the as-prepared grain size was from 8.4 nm to 50 nm, and the maximal SBET was 107.8 m2/g, the average pore size distribution of the sample was 6 nm to 15 nm. With increasing the proportion of detonator, the size of TiO2 crystallite increased, the BET surface areas decreased, the pore size increased, meanwhile the contents of rutile increased and anatase decreased.