OBJECTIVE: To develop an HPLC method for the determination of Gastrodin in Qianglitianmaduzhong capsule. METHODS: The samples were separated on Diamond C18 column (250 mm?4.6 mm,5?m).The mobile phase consisted of acetonitrile - 0.1% phosphoric acid(2∶98) at a flow rate of 1.0 mL?min-1.The UV detection wave length was set at 210 nm and the column was kept at room temperature. RESULTS: The linear range of Gastrodin was 0.126 4～3.160 0 ?g(r=0.999 8), and the average recovery was 98.30%(RSD=0.8%,n=6).CONCLUSION: The method is suitable for the determination of gastrodin in Qianglitianmaduzhong capsule.