The invention provides an emergency nursing oxygen breathing apparatus, which belongs to the technical field of a medical apparatus. The emergency nursing oxygen breathing apparatus comprises a humidification bottle, an air inlet, a flow rate meter, a fast connector and an air guide pipe, and also comprises a timing switch, a display screen, a headset rack, a nose breathing pipe, a left rotating arm, a left headset cabin, a right headset cabin and a right rotating arm, wherein the flow rate meter and the timing switch are arranged between the humidification bottle and the fast connector; the fast connector is connected with the headset cabins through the air guide pipe; the headset cabins comprise the left headset cabin and the right headset cabin which are connected through the headset rack; and the left rotating arm and the right rotating arm are arranged on the headset cabin, and are respectively connected with the nose breathing pipe and a mouth breathing pipe. The emergency nursing oxygen breathing apparatus has the beneficial effects that a headset type fixing structure is used; an oxygen breathing pipe can be conveniently fixed; the use feeling is comfortable; falling cannot easily occur; two modes including oxygen breathing by mouth and oxygen breathing by nose are set; the oxygen breathing modes can be flexibly changed according to the conditions of patients; meanwhile, the flow rate fine adjusting mode is set, so that the oxygen breathing speed can be precisely adjusted; and the occurrence of uncomfortable feeling is avoided.