Container opening and closure

The utility model relates to a valve and faucet class, particularly a container switch for flexible packing. The switch is composed of a switch cover and a switch seat, wherein the switch cover comprises a water passing inner cavity, a water outlet hole and an elastic stopper. A pull ring is arranged on the elastic stopper. A clamping inner ring is arranged on the inner wall of the water passing inner cavity of the switch cover. The switch seat comprises a water passing inner cavity. A clamping outer ring is arranged on the outer wall of the water passing inner cavity. The switch cover and the switch seat are clamped and fixed. The outer wall of the clamping outer ring and the water passing inner cavity of the switch cover are in tight fit. The utility model has the advantages that the utility model is matched with a flexible packing bag, the utility model can directly discharge water to be drunk, the utility model does not need to be matched with a drinking water device to be used and secondary pollution is stopped. The utility model has convenient use, convenient transportation and low packing cost. The utility model sufficiently embodies the functions of energy saving and environmental protection.