The invention relates to an airport detection method and device based on an SAR (Synthetic Aperture Radar) remote sensing images, belongs to the technical field of remote sensing image processing andanalysis, and solves the problems of complex process, long consumed time, difficulty in parameter determination and the like in the conventional airport detection. The detection method comprises the following steps: sequentially carrying out edge region highlight processing and median filtering processing on an original SAR remote sensing image to obtain a preprocessed SAR remote sensing image; sequentially performing image binarization processing and inversion processing on the preprocessed SAR remote sensing image to obtain a binarized SAR remote sensing image; carrying out morphological processing on the SAR remote sensing image after binarization; and carrying out connected domain evaluation on the remote sensing image after morphological processing, generating an airport detection result and outputting the airport detection result. The invention is mainly applied to airport extraction of satellite-borne SAR remote sensing images, can realize rapid detection of airports, is simpleand effective, is low in operation complexity and good in robustness, and can greatly improve the airport detection efficiency.