The invention relates to a cutter detection method and device, and belongs to the technical field of safety inspection. The cutter detection method comprises: acquiring a cutter image database comprising cutter images, and marking cutter positions on the cutter images; training the cutter image database by adopting PVANET to obtain a cutter automatic detection model; inputting a to-be-detected radiation image into the cutter automatic detection model to obtain a detection result, the detection result comprising whether a cutter exists in the radiation image and a cutter position when the cutter exists. According to the cutter detection method and device, an electronic device and a computer readable medium, whether the cutter exists in the radiation image or not and the position when the cutter exists can be detected.