Florasulam herbicide is a triazolopyrimidine sulfon herbicide. It is a typical acetolactate synthase (ALS) inhibitor. By inhibiting acetolactate synthase in plants. Hinders the biosynthesis of side chain amino acids such as valine, leucine, and isoleucine. Cell division is inhibited, the normal growth of weeds is destroyed and the weeds die.

Florasulam has systemic conductivity. After being absorbed by plant leaves and roots, it is transmitted to the entire weed plant. Accumulate in the meristem and cause plant death. Therefore, the grass is completely killed and there will be no recurrence.