Oxyhydrogen breathing machine

The utility model discloses an oxyhydrogen breathing machine which can make hydrogen completely inhaled by a human body and not leaked in the air so as to safely breathe oxygen and hydrogen. A hydrogen and oxygen production device with electrolytic water is connected with a filter cup through a connecting tube; the filter cup is connected with a temporary storage bag and a pressure limiting cup; a filter cup air inlet, a filter cup air outlet and a temporary storage outlet are formed on the filter cup; a pressure limiting cup air inlet and a pressure limiting cup air outlet are formed on the pressure limiting cup; the hydrogen and oxygen production device with electrolytic water is connected with the filter cup air inlet through the connecting tube; the lower end of the filter cup air inlet is connected with a medical hard tube; the temporary storage outlet of the filter cup is connected with the temporary storage bag through a connecting tube in a sealing mode; the filter cup air outlet is connected with the