The invention discloses a beer container which specifically comprises a bag. The bag is a barrel-shaped soft bag. A beer spear connector is arranged at the top of the bag and connected with the soft bag in a bonding mode. The soft bag is formed by bonding multiple layers of composite film materials which are high in oxygen permeation resistance and carbon dioxide leakage resistance. In addition, an outer supporting frame can be selectively arranged. The outer supporting frame comprises a top frame and a frame body, and the top frame and the frame body can be separated. A stainless steel keg is replaced by the bag since the bag has the characteristics of low price and disposable use and can achieve sterile filling, the soft bag can be disinfected and sterilized in advance, does not need to be cleaned before being filled with beer and is more sanitary; good strength and rigidity are achieved since internal pressure exists in the filled beer bag; generally, the bag can be used for directly conveying and selling beer, and the outer supporting frame can be arranged for places where conveying and using conditions are severe, so that the beer bag is protected, and beer can be conveyed more safely and conveniently.