The invention relates to a screw-down type separate sealing bottle cap of Chinese herbal medicine solute and solvent. The inside of an upper rotary bottle cap is provided with a helical-teeth arcuate cutter with pointed sawteeth and a tension stirring column. When the upper rotary bottle cap rotates downwards, the tension stirring column tensions an aluminum foil plate, then the helical-teeth arcuate cutter cuts off the aluminum foil plate on the bottle mouth in order to mix Chinese herbal medicine solute and the hydrosolvent in the bottle. An easy-to-draw sealing ring, which can be drawn to break by hands, is arranged at the intermediate connection position between a lower bottle cap and the upper rotary bottle cap. The invention not only has the advantages of simple structure and convenient operation but also is characterized in that the service effect meets the drinking demands of patients and the guarantee period of Chinese herbal medicine is extended.