Disclosed are a positioning method and device. The method comprises: acquiring a positioning request of a terminal to be positioned, wherein the positioning request comprises a fingerprint of the terminal to be positioned, the fingerprint comprising identifiers of a main base station connected to the terminal and a plurality of base stations of neighboring cells and corresponding signal intensity receiving values; and calculating the similarity between fingerprints of other terminals in a fingerprint database and the fingerprint of the terminal to be positioned, and calculating a position of the terminal to be positioned through the positions of the other terminals according to the similarity, wherein the fingerprint database comprises fingerprints of a plurality of terminals and corresponding positions when the fingerprints are collected. By means of the present invention, the problem in the related art that the positioning effect is relatively poor in the case where a service end is unable to parse a position of a base station is solved, moreover, the positioning method has the advantages of high positioning accuracy and high positioning speed, and specifically, the positioning effect is greatly improved in the case where the service end is unable to learn the positions of all base stations and the density of the base stations is low.