Ranking product information is disclosed, including: determining, for each of a plurality of pieces of product information, a category grading value and a plurality of attribute grading values associated with that piece of product information; determining a plurality of user demand values corresponding to the plurality of pieces of product information based at least in part on the category grading value and at least one of the plurality of attribute grading values associated with each of the plurality of pieces of product information; and ranking the plurality of pieces of product information based at least in part on the corresponding plurality of user demand values.