A method and system for image feature extraction based on MapReduce for image-based searching are provided. A distribution system for extracting image vectors representing characteristics of an image in an image includes a master node for extracting a feature vector from at least one slave node and an image and distributing the extracted feature vector to the slave node, Each determining a visual word to which each feature vector is to be assigned based on a visual word generated by clustering feature points stored in an image database and a distance between the feature vectors, and based on the identifier of the image, A residual vector which is a difference between the feature vector assigned to the word and the determined visual word is calculated and an image vector representing the feature of the image can be constructed using the residual vector.
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