Motor vehicle cab atmosphere alcohol over-concentration alarming device

The utility model belongs to the technical field of drunk driving alarming devices, particularly to a motor vehicle cab atmosphere alcohol over-concentration alarming device. The motor vehicle cab atmosphere alcohol over-concentration alarming device is mainly technically characterized by comprising an alcohol detecting mechanism with a fixing rack, and a control mechanism connected with the alcohol detecting mechanism. The control mechanism is provided with a short message triggering mechanism, the triggering signal terminal of the short message triggering mechanism is connected with a GSM (global system for mobile communication) information case with license number information and vehicle location, and the recipient information of the short message triggering mechanism is set to be a traffic police information receiving platform. The alcohol detecting mechanism is fixed onto a sun shield rack in front of a driver; after the alcohol detecting mechanism detects atmosphere alcohol, the control mechanism triggers the short message triggering mechanism to transmit the vehicle license number information and the vehicle location information to the traffic police information receiving platform, accordingly, drunk driving behaviors can be investigated and treated in a targeted mode, and detection for innocent vehicle drivers can be avoided; by detecting the drivers in real-time, fluke minds of the drivers can be dispelled, deterrent effects on drunk driving behaviors can be achieved, and incidence of the drunk driving behaviors can be effectively reduced.