Beer bottle

The utility model discloses a beer bottle which comprises a bottle main body and a bottle cap. The bottle main body comprises a bottle neck and a bottle body which are designed to be a whole, a bottle opening is formed in the upper end of the bottle neck, an internal thread is arranged close to the bottle opening on the inner lateral wall of the bottle neck, and the bottom of the bottle body serves as the bottle bottom. The bottle cap comprises an outer bottle cap part and an inner bottle cap part, wherein the upper portion of the inner bottle cap part is conveniently and detachably clamped into the outer bottle cap part, and an external thread in threaded mesh with the internal thread of the bottle neck is arranged on the outer lateral wall of the lower portion of the inner bottle cap part. The bottle cap can seal the bottle opening of the bottle main body through the threaded mesh between the external thread at the lower portion of the inner bottle cap part and the internal thread on the bottle neck of the