The invention discloses an anti-fake bottle cap. The anti-fake bottle cap comprises a bottle cap anti-fake sleeve and a cap liner with one end nested in the bottle cap anti-fake sleeve and the other end connected with a bottle mouth, wherein the cap liner and the bottle cap anti-fake sleeve are arranged into two different colors, the bottle cap anti-fake sleeve is provided with a dent or a through-hole forming characters or design marks, the dent or the through-hole presents marks with special significance against the cap liner, such as anti-counterfeiting numbers, production date, quality guaranteed period, batch number, trademarks and other simple patterns with special significance, and the marks are clear and cannot fall off nor be erased. The anti-fake bottle cap has the advantages that the processing is simple, the marks are obvious, and the anti-fake bottle cap has good identification and anti-counterfeiting function, can be widely used for oil bottles and beverage bottles, etc., and brings great convenience for manufacturers and users.