Combined anti-counterfeit bottle cap

The utility model discloses a combined anti-counterfeit bottle cap. The combined anti-counterfeit bottle cap comprises an outer tube and an inner cover; the interior of the inner cover is matched with the mouth of a bottle body, a circle of cutting line is formed on the outer tube, and the outer tube is divided into upper and lower parts easy to break by the cutting line; an anti-counterfeit rib is arranged inside the outer tube in a position corresponding to the cutting line, the upper part of the anti-counterfeit rib is a plane, while the lower part of the anti-counterfeit rib is inclined inwards, and the outer edge of the bottom of the inner cover is matched with the anti-counterfeit rib in a snap joint manner. The combined anti-counterfeit bottle cap adopts a double anti-counterfeit way: firstly, the outer cover is opened in a twisting-off breaking way, and the external part must be completely broken to open the outer cover without recovery; secondly, the anti-counterfeit rib is arranged at a position where the interior of the external part is in contact with the edge of the bottom of the inner cover, so that the opened inner cover cannot be rotated to the initial position; thirdly, a gap is formed between the inner cover and the upper part of the outer tube, in other words, the inner cover is assembled with the upper part of the outer tube with a gap therebetween, and as a result, after being twisted off for opening, the upper part of the outer tube cannot be recovered, and drops naturally, and therefore, the anti-counterfeit purpose is achieved.