Natural gas leakage detection alarm

The utility model discloses a natural gas leakage detection alarm, which relates to the field of natural gas detection equipment and comprises a natural gas alarm, a power line is arranged on the natural gas alarm, a plurality of detection holes are arranged on the natural gas alarm, a protection structure is movably sleeved on the natural gas alarm, and two T-shaped insertion strips are slidably mounted on the protection structure. And the same filtering structure is fixedly mounted on the bottom sides of the two T-shaped inserting strips, two fixing rods are fixedly mounted on one side of the protection structure, and the same linkage structure is slidably mounted on the two fixing rods. According to the utility model, through the arrangement of the protective shell, the filter plate, the mounting shell and other structures, the protective shell and the mounting shell can protect the natural gas alarm, so that oil fume in a kitchen is prevented from being adhered to the natural gas alarm; the detection hole