The invention relates to a "structural improvement of nose type oxygen mask". The mask for medical oxygen supply includes a body, which is provided with a tube body, and the tube body is bypassed by an air inlet pipe. The feature of the case is that the body is provided with another detection tube, and the outer end of the detection tube is connected to the carbon dioxide detector.Therefore, the carbon dioxide detector can detect the carbon dioxide status in the mask at any time. If there is no carbon dioxide or the concentration is too low, it means that the patient has abnormal breath and weak vital signs. A warning device can be used to send out an alarm to remind the medical staff to carry out necessary emergency rescue or disposal.本創作係有關於一種「鼻型氧氣面罩之結構改良」，該種醫療供氧之面罩，包括有一本體，該本體設置有一管體，該管體旁通有一進氣管；本案特徵在於：該本體另設有一檢測管，該檢測管外端連接至二氧化碳偵測器。藉此，該二氧化碳偵測器能隨時檢測面罩內的二氧化碳狀態，若發現未有二氧化碳或其濃度過低時，代表病人呼吸異常、生命徵像薄弱，得連動一警示裝置發出警訊，以提醒醫護人員進行必要急救或處置。
