Target recognition model training method, target recognition method and related device

The invention discloses a training method of a target recognition model, a target recognition method and a related device, and the training method of the target recognition model comprises the steps: extracting sample image features of a sample image based on a feature extraction network of the target recognition model, and marking the sample image with a sample type to which the sample image belongs, on the basis of a classification network of a target recognition model, feature similarities between the sample image features and various sample categories are measured, feature distances between the sample image features and various sample categories are measured, and the classification network comprises reference features of various sample categories; and on the basis of the sample category to which the sample image belongs and a binary loss function, performing loss measurement on the sample image feature and the feature similarity and the feature distance of each sample category to obtain a first loss, and