Barium titanate ceramics（BaTiO₃）, which have excellent dielectric properties, is one of the most widely used materials in electro-ceramics areas. With the development of technology, the research of preparation and properties of BaTiO₃ has been a focal point in the field of solid inorganic chemistry. It has been developed rapidly, leading to their use in application areas. Scientific challenges in this field lie in such attributes as high-property and the grain size in a narrow scale. Considering the application demands, we have done a lot of work in the preparation of BaTiO₃ ceramics and BaTiO₃-based ceramics with alkaline earth metal-doped materials. With further study, we discussed their working mechanism primarily. The data has important meaning in this field.Currently, in kinds of new ways to preparation of barium titanate nano-crystal ceramics, the synthesis of liquid chemical is the most full-used working technique in laboratory. Using Sol-gel in this paper, with simple manipulations, which is no need for large-sized instruments, we can get homogeneous multi-constitute system easily. In this way, we can get high-property product that has fine-size. Along with the accumulation of data and progress in working conditions, researchers are turning their hotspot to mechanism from progress and continuously achieved new products.In my article, the main work is as the follows: 1) The synthesize of stable solTo synthesize transparent and stable sol for BaTiO₃ powders to fire excellent ceramics is a very important step. Based on many literatures we have done research on the role of different solvent, ratio of raw materials and concentrations respectively to see about the mechanism of sol working and impact to powders. We get the primary rule of different technique to powder quality and the optimum