Portable children oxygen breathing apparatus

The invention discloses a portable children oxygen breathing apparatus. The portable children oxygen breathing apparatus comprises a fixed plate, wherein a groove is formed in the end face of the fixed plate; a cavity of the groove is matched with the size of an oxygen bag; the oxygen bag is arranged in the groove; an inflating hole in the oxygen bag extends out of the fixed plate and is connected with a children face mask; a pipeline valve switch is also arranged on the inflating hole; a pressing plate is arranged on one side in the groove and is guided by a plurality of multi-section sleeves; springs jacking the pressing plate are arranged on the multi-section sleeves; fixing rings are arranged on one side wall of the fixed plate; tying bands are arranged on the other side wall of the fixed plate; tying bands are also arranged on the back surface of the fixed plate. The portable children oxygen breathing apparatus can be applied to children, particularly infants such as newborns, and can be also suitable for older children such as elderly children, even including adults; the portable children oxygen breathing apparatus has the advantages of wide application range, high comfortableness and high tolerance, and the concentration and the effect of oxygen supply are effectively guaranteed.