In sight of the problems that high content, large fluctuation and uncontrollable of solid content, the solid content of TiCl4 in the whole process of chlorination was investigated. The results show that the high solid content in leaching tank and the high temperature during the cooling process lead to the high solid content in the raw TiCl4 and the settlement of solid is not obvious. Base on the results, several technologies are proposed, including insufficient chlorine technology in chlorination furnace, temperature control technology in dust collecting room and washing system and settlement control technology, the solid contents in raw TiCl4 and leaching tank are decreased effectively. The solid contents in leaching tank can be stable controlled within 200 g/L with an average of 133.62 g/L, the solid contents in raw TiCl4 is controlled within 15 g/L, the effect of solid on chlorination system and products is decreased and it provides a guarantee for the normal and stable operation of the chlorination system and lays a foundation for increaseproduction capacity of refiningcrude TiCl4.