The invention discloses a 
pedestrian re-identification method based on multi-attribute and multi-strategy fusion learning. The method of the invention includes the steps of in an offline 
training phase, firstly selecting 
pedestrian attributes which are easy to be judged and have a sufficient distinguishing degree, training a 
pedestrian attribute identifier on an attribute 
data set, then labeling attribute tags for a pedestrian re-identification 
data set by using the attribute identifier, and next, by combining the attributes and pedestrian identity tags, training a pedestrian re-identification model by using a strategy fused with pedestrian classification and novel constraint comparison 
verification; and in an online query phase, extracting features of a query image and images in a 
database by using the pedestrian re-identification model, and calculating the 
Euclidean distance between the feature of the query image and the feature of each image in the 
database to obtain the image with the 
shortest distance, which is considered as the result of pedestrian re-identification. In terms of performance, the features in the invention are distinguishable and high accuracy is obtained; and in terms of efficiency, the method of the invention can quickly search for the pedestrian indicated by the query image from the pedestrian 
image database.