Abstract:Objective To study the formulation and processing technology of ambroxol hydrochloride buccal tablets, and to establish its quality control. Methods Alternations and doses of supplementary materials and adhesion were used to select optimum formulation, with appearance, taste and fragmentary degree as the assessment index, and the best processing technology and suitable parament were selected according to the experiment results; UV-vis was used to determine the dissolution of ambroxol hydrochloride buccal tablets, and HPLC method for its content in the prepara- tion. Results The optimal formulation was composed of ambroxol hydrochloride (50 g), mannitol (300 g), erythritol (250 g), aspartame (10 g), mentha arvensis oil (5 g), magnesium stearate (6 g), and 10% PVPK30 was dis-solved by 60 % alcohol as the wetting agent. Ambroxol hydrochloride in the preparation was released to more than 75 % in 45 min. The detected concentration of ambroxol hydrochloride was linear at 0.40- 16.02 mg ·mL^-1. Conclusion The formulationn of the ambroxol hydrochloride buccal tablets is reasonable and the preparation technology is reliable, which can be used in industrial production. The methods are simple, accurate, reliable, specific and can be used for the quality control of this buccal tablets.