Quantitative medicinal low-density polyethylene bottle cap inner plug

The quantitative medicinal low-density polyethylene bottle cap inner plug comprises a bottle inner plug body and an oil pipe, a cylinder is fixedly installed in the bottle inner plug body, a medicine outlet is fixedly connected to one end of the cylinder, a first air guide channel is formed in the cylinder, an air inlet is formed in one end of the oil pipe, and a second air guide channel is formed in the other end of the oil pipe. A second gas guide channel is formed in the oil pipe; by redesigning the diameter of the medicine outlet and the structure of the air inlet, when the diameter of the medicine outlet is 10 mm and the diameter of the air inlet is 3 mm, the amount of liquid medicine dripped every time can be kept consistent, the amount of the dripped liquid medicine is 1 ml and is equal to 28 drops, the requirement for precise medicine administration is met, the safety of children can be protected, and use by people is facilitated. 本发明公开了定量药用低密度聚乙烯瓶盖内塞，包括瓶内塞和油管，所述瓶内塞内部固定安装有圆柱体，所述圆柱体一端固定连接有出药口，所述圆柱体内部开设