Bottle cap with switch

The utility model discloses a bottle cap belonging to a packing bottle, in particular to the bottle cap with a switch, comprising the switch circular base of the bottle cap and a switch core. The switch core is inserted into the switch circular base, and the switch core and the switch circular base are interactive and matched together; the switch base comprises a base barrel, a switch inlet and a switch outlet, a bottle cap, and a sealing positioning concave groove; the switch core comprises a circular core, a core hole, a sealing positioning convex ring, and a rotary knob. The bottle cap with a switch is mounted on a packing bottle, which is labor saving, time saving, safe, convenient, and sanitary when the bottle cap with a switch is used, having novel and simple structure and high cost performance; the bottle cap with a switch is suitable for various packing bottles and containers which use the packing with a cap.