To provide a medial use oxygen supplyer whose ultraviolet sensor provided at a body section, has a function of detecting flame.

When the detection of the flame sensor continues for first predetermined seconds or more, this medical oxygen supplyer having a cannula and a flame sensor actuates notification means by a control section to perform a notification, and when the detection of the flame sensor continues for second predetermined seconds or more, further actuates the notification means by the control means to perform the notification and at the same time stop oxygen generation means. The flame sensor is the ultraviolet sensor, is provided inside the body section and has an ultraviolet transmission window. Two or more flame sensors are provided and have the view angles with mutually different orientation axes.