The embodiment of the invention provides a shellfish product classification and recognition method and device, and the method comprises the steps: extracting feature data from a to-be-recognized imageaccording to wavelet transformation, inputting the extracted feature data into a trained BP neural network, and outputting a corresponding image recognition result; Classifying shellfish products according to the image recognition result, Wherein the BP neural network is obtained by training based on sample data of different types of shellfish products and predetermined type tags, and the sampledata extracts feature data according to corresponding wavelet changes. According to the shellfish product classification and recognition method provided by the embodiment of the invention, the featuredata are extracted from the to-be-recognized image according to the wavelet transformation, the extracted feature data are input into the trained BP neural network, the corresponding image recognition result is output, and classification is carried out according to the result, so that the classification and recognition efficiency and accuracy are improved.