The duration of oxygen after gallstone surgery is generally recommended to last 6 hours, but should be determined by the degree of hypoxia. After gallstone surgery, the duration of oxygen intake is approximately 6 hours at a flow rate of 2L/min. When inhaling oxygen, you need to remove the pillow and lie flat, and tilt your head to one side, which can effectively prevent vomitus from entering the respiratory tract and causing asphyxiation. However, some patients with gallstones suffer from severe hypoxia after surgery, and their bodies are relatively weak, so these patients can appropriately increase the time of oxygen intake. During the period of oxygen intake, heart rate, blood pressure, pulse rate and oxygen saturation should be observed regularly, and can be stopped after they return to normal. After gallstone surgery oxygen must be under the guidance of a professional physician, do not operate without authorization, so as not to grasp the flow, time, causing unnecessary damage.