Environment-friendly nitrogen insulation cabinet

The utility model discloses an environment-friendly nitrogen insulation cabinet which comprises a cabinet body, an air exhaust assembly and an air exhaust assembly, and a temperature and humidity sensor is arranged on the inner wall of the cabinet body. The air exhaust assembly comprises an air exhaust pipe arranged on the right side of the cabinet body, a fan arranged on the inner wall of the air exhaust pipe, a first filter screen arranged on the inner wall of the air exhaust pipe and a second filter screen arranged on the inner wall of the air exhaust pipe. The air exhaust assembly comprises an air exhaust pipe arranged on the top of the cabinet body, a second electric valve arranged on the air exhaust pipe and a draught fan arranged on the rear side of the air exhaust pipe. According to the utility model, the nut of the air exhaust assembly can be rotatably separated from the stud, the sealing cover can be rotatably opened after the nut is separated from the stud, external air can be exhausted into the ca