The dispersing disc is a accessory that is matched with a high speed dispersing machine and connected to the main shaft of the high-speed dispersing machine. When the main shaft runs at high speed, the upper and lower parts of the dispersing disc present in a rotating state, and a turbulent zone is formed at the edge of 2.5-5mm. The upper and lower serrations of the dispersing disc perform high-speed shearing, impact, crushing, and dispersing on materials such as coatings, paint, dry powder, and solid-liquid, in order to achieve a state of rapid mixing, dissolution, dispersion, and refinement.