1. A method for enriching contents of a current website, the method comprising: obtaining a corpus from the current website and other websites, and extracting object features from the corpus, wherein the corpus comprises specifications of the object and user reviews about the object; according to the corpus, constructing multi-dimensional vectors for the extracted features; for a specific feature, making similarity comparison of its multi-dimensional vector and multi-dimensional vectors of other extracted features; and determining features with similarities being higher than a predetermined threshold as a same feature, and reinforcing the current website with at least one feature which is different from those on the website and corresponding attributes of the at least one feature; wherein for a specific feature, comparing the similarity of its multi-dimensional vectors and multi-dimensional vectors of other extracted features comprises: aligning dimensions of multi-dimensional vectors of all extracted features, wherein for a specific feature, dimensions of multi-dimensional vectors of other features are treated as dimensions of the specific feature, so that each feature has the same number of dimensions; calculating mutual information between the specific feature in the corpus and each dimension of its multi-dimensional vectors as a weight of each dimension; and calculating similarities between multi-dimensional vectors of various features according to the weights, wherein similarities between multi-dimensional vectors of various features are calculated based on Euclidean distance between the multi-dimensional vectors.