The invention discloses a gas detection alarm, and the alarm comprises an MCU, a gas sensor, a
buzzer, a
wireless receiving and transmitting module, a warning lamp, and a background
server. The gas sensor is connected with the MCU, is disposed at a ventilation opening of to-be-detected gas, and is used for detecting the concentration of the to-be-detected gas at the ventilation opening and transmitting the concentration information to the MCU. The MCU is connected with the
wireless receiving and transmitting module, and is used for transmitting the concentration information to the background
server through the
wireless receiving and transmitting module. The MCU is also connected with the
buzzer and the warning lamp, and is used for controlling the
buzzer and the warning lamp to work when the concentration information is greater than a preset concentration threshold value, and transmitting the warning information to the background
server. When the alarm detects that the concentration is too high, the alarm gives an alarm, and the warning lamp flickers. The warning information is transmitted to the background server, and then the warning information is pushed to a remote
client, so as to bring convenience to a user for mastering the concentration condition in real time.