Breathing machine humidifying tank with water-gas separation function

A breathing machine humidifying tank with a water-gas separation function comprises a base and a tank body containing water, a water-gas separation part connected with a gas inlet of a gas outlet pipe is arranged in the tank body and provided with a gas inlet part, a gas passing part and a gas outlet part, and the gas inlet part and the gas outlet part are both arranged in the gas passing part. The air inlet end of the air inlet part is allowed to be located at the lower end of the air passing part and exposed out of the air passing part, the air outlet end of the air outlet part is located at the upper end of the air passing part and connected with the air outlet pipe, the air passing part is provided with a path for guiding oxygen to the air outlet part, and the flowing path of the oxygen is allowed to be prolonged through the path, so that water-air separation is achieved. When oxygen is humidified, moisture taken away together with the oxygen is separated from the oxygen through the water-gas separation p