The utility model discloses a smoke alarm device for a machine room. The device comprises a mounting base, a mounting base, a shell and a transparent protective shell, mounting lugs are formed on theouter side of the mounting base, a mounting supporting plate is arranged in the mounting base, a first damping spring is bonded to the lower portion of the mounting supporting plate, a second dampingspring is bonded to the upper portion of the mounting supporting plate, and the mounting base is arranged on the inner side of the second damping spring. According to the utility model, when a fire occurs; alarm, the fire situation can be sent to a management office in real time through camera shooting; management personnel can know a fire source and rapidly take correct fire extinguishing measures. The smoke alarm device can be detected in real time, normal work of the smoke alarm device is guaranteed, the first damping spring and the second damping spring can play a role in buffering and damping, the smoke alarm device is protected, and the service life of the smoke alarm device is prolonged.