How to increase casting speed and increase output has always been the main focus of low-carbon continuous casting in steelmaking enterprises. The continuous casting powder developed by our company can well control the sintering temperature and viscosity by adjusting the crystallization temperature. Under high-speed conditions, it can maintain normal consumption, liquid slag layer thickness and reasonable heat transfer, so as to ensure the thickness of the slab shell coming out from the outlet of the crystallizer, and achieve the purpose of debonding in the entire continuous casting process.