Barium titanate, a kind of strong dielectric material, is one of the most widely used materials in electronic ceramics, and is known as the "pillar of the electronic ceramics industry". There are too many studies on barium titanate. Many scholars at home and abroad have done a lot of research work on barium titanate. Through doping modification, a large number of new materials have been obtained, especially in the application of MLCC. Its application prospects are very broad, looking forward to our participation.