The invention discloses a fatigue driving monitoring device, which comprises an image collecting module, an image processing and identification module, a speed detection module, a control module, a warning module and a storage module, wherein the image processing and identification module receives the human face image information sent by the image collecting module, carries out analysis processing, identifies the human face characteristic information in the images, compares the human face characteristic information with human face image templates in the storage module, and sends image comparison result information to the control module to be analyzed and processed, and signals are sent to the warning module according to the analysis processing results. The fatigue driving monitoring device has the advantages that an image processing and identification mode is adopted for objectively judging whether a driver is in the fatigue driving state or not, the judgment is not up to the subjective consciousness of use personnel or supervisory personnel, whether the driver is in the fatigue driving state or not can be detected as long as the driver generates the fatigue state even within the specified fatigue driving standard time, and in addition, the fatigue driving warning information is sent out for prompting the driver, so the fatigue driving early warning effect can be realized.