Abstract: Tetrabasic lead sulphate（4BS） was the elongated crystal with stable thermodynamic properties that can provide strong support and enhance the mechanical strength of electrode plate.The substance can significantly improve the structure and performance of the active materials on positive plate，and with a positive influence on the specific capacity and service life of the battery.The basic properties and performance of 4BS were introduced and the methods and the application status of the preparation of 4BS with different raw materials were reviewed systematically.The prepared direction and applied prospect in the future of 4BS were also discussed.The ways for preparation of 4BS with fine particle，uniform size，high purity，and high dispersion etc.as the research focus were pointed out.The introduction of 4BS into the lead paste as nucleating agent will become one of directions in its industrialization process.

Key words: tetrabasic lead sulphate, positive additive, nucleating agent