Exhaust plug structure

The invention discloses an exhaust plug structure, which comprises a base, an exhaust mechanism and a defogging mechanism, wherein a first ventilation circular hole is formed on the base; the first ventilation circular hole penetrates through the base; the exhuast mechanism comprises an exhuast plug main body and a telescopic assembly; the exhuast plug main body is fixedly connected with the base;the exhuast plug main body is provided with a plurality of second ventilation circular holes and a cavity; the telescopic assembly is positioned in the cavity; the defogging mechanism comprises two gratings and at least one metal wire mesh layer; the two gratings are fixedly connected with the base and positioned in the first ventilation circular hole; the two gratings are parallel to each other;the metal wire mesh layer is positioned between the two gratings and formed by splicing metal wire mesh unit; the metal wire mesh units are provided with metal wire meshes and metal wire mesh pads; the included angle between