The invention provides a double-background air breather monitoring system based on an internet of things. The system comprises an air breather, a first monitoring end and a second monitoring end; the first monitoring end comprises a RF signal receiver and a first central processor; the second monitoring end comprises a wireless communication module and a second central processor; and double-background monitoring with different communication modes is adopted to guarantee the communication reliability. An air pressure sensor is arranged at the bottom end of an air cylinder of the air breather; the air pressure sensor detects the air pressure in the air cylinder of the air breather, and transmits the air pressure information to an A/D converter; the A/D converter converts analog signals to digital signals; an amplifier amplifies the signals to transmit to a MCU; the MCU receives the amplified signals; a digital signal processor compares the detected air pressure signal with a preset signal value; and when the detected air pressure signal value is lower than the preset signal value, the MCU controls a RF signal emitter and a wireless signal emitter to respectively send signals to the first monitoring end and the second monitoring end.