Quantitative dispensing bottle cap

The utility model discloses a quantitative dispensing bottle cap, and belongs to a bottle cap facilitating quantitative dispensing for a patient. The quantitative dispensing bottle cap consists of an outer bottle cap (1), an inner bottle cap (3), a rotary quantitative plate (8) and a turnover cover (2), wherein the inner bottle cap (3) is a cylinder of which the cap top is thickened, threads are arranged inside and outside the lower opening of the inner bottle cap (3), the thickness of the thickened part of the cap top is 5 times the diameter of a medicament granule, four circular through holes are formed in the inner bottle cap (3), and a notch is formed on the lateral surface of the inner bottle cap (3); four medicament through holes are formed at corresponding positions of the rotary quantitative plate (8) and completely correspond to the circular holes on the inner bottle cap (3); a convex claw is arranged on the rotary quantitative plate (8) and extends out of the notch on the inner bottle cap (3), and a