Surface defect detection method and device

The invention relates to the technical field of image recognition, in particular to a surface defect detection method and device, and the method comprises the steps: obtaining an image of a to-be-detected object; inputting the image of the to-be-detected object into a defect detection model which is trained in advance, obtaining the defect position of the to-be-detected object, wherein a network structure of the defect detection model which is trained in advance comprises a feature extraction network and a prediction network, and the feature extraction network comprises a plurality of dense connection modules which are connected, the dense connection module comprises an input layer, a plurality of middle layers and an output layer, and the output layer of the dense connection module is the input layer of the next dense connection module. The last middle layer of the dense connection module is superposed with the input layer of the dense connection module and the forward input layer of the dense connection mod