The invention relates to a bottle opener, in particular to a beer bottle opener. The beer bottle opener mainly comprises a bracket, an electronic watch and a magnet. The electronic watch and the magnet are disposed on the bracket, and the bracket is provided with an opening hole and a hook. The opening hole is located at the front end of the bracket, and a sheet metal is arranged on the inner sideof the opening hole. The electronic watch is inlaid in the upper middle part of the bracket, and a button cell is arranged in the electronic watch. The magnet is inlaid in the lower middle part of the bracket, and the hook is located at the tail end of the bracket. A metal ring is arranged on the inner side of the hook. Compared with a traditional bottle opener, the beer bottle opener is added with a variety of ways to place the bottle opener, and the practicability and durability are greatly increased.