Polyaluminium chloride many kinds of production process: in the field of water treatment and flocculation method of purifying water is one of the most ancient method of solid-liquid separation, due to its wide applicability, simple process, low processing cost etc, flocculating method is still widely used in drinking water, sewage and industrial wastewater treatment. Polyaluminium chloride (PAC) is a kind of inorganic polymer flocculant. It first developed in Japan and in the 1960 s put into industrial production, is currently the most mature technology, market sales of the largest flocculant. PAC has quick flocs formed, when using precipitation performance is good, less consumption of the water alkalinity, especially for water temperature, pH value, turbidity and organic matter content changes the advantages of strong adaptability. Beginning in the 1970 s in our country, has the polyaluminium chloride has carried on the research and development, in recent years, along with the development of laboratory research got rapid development of industrial production. This article from the perspective of PAC produced by different raw materials. The production technology of polyaluminium chloride in China at present are discussed and discussed.