Barrier-free passing civil air defense door for entrance and exit of civil air defense project

The utility model discloses a barrier-free passing civil air defense door for an entrance and exit of a civil air defense project, relates to the technical field of civil air defense doors, and aims to solve the problems that the civil air defense door is not provided with a structure capable of detecting the quality of external air, so that people in the civil air defense door cannot know whether harmful gas exists in the external air conveniently; and when the civil defense door is used in wartime, the practicability is not high. The door body is installed in the door frame, the door frame is embedded in a building structure, a detection assembly is installed on the surface of the door body, and the detection assembly comprises a screw rod and a sensor which are connected to the door body in a threaded mode. The outdoor air quality is detected through the sensor, and the detected data is transmitted to the electronic equipment, so that personnel can accurately know the outdoor air quality to deal with warti