Gas alarm for toxic gas detection

The utility model belongs to the field of gas detection, and particularly discloses a gas alarm for poisonous gas detection, which comprises a base, universal wheels and a support frame are arranged below the base, a shell is mounted above the base, shock pads are arranged on the periphery in the shell, and a gas detector, a master controller and a storage battery are assembled from left to right; a gas outlet is formed in one side, close to the gas detector, of the shell; a gas guide pipe, a sucking pump, a gas inlet and a flow guide cover are sequentially connected above the gas detector; an alarm indicating lamp and an alarm are installed on the upper portion of the shell, and internal circuits of the alarm indicating lamp and the alarm are both connected with the master controller. Gas is sucked into the gas detector to be analyzed and processed, if the gas is poisonous, the alarm is controlled by the master controller to give an alarm, and the alarm lamp flashes, so that the situation that the alarm sent