The invention discloses a number recognition method and device, and belongs to the technical field of computers. The method comprises the steps of reading a number sequence in a text message, detecting whether the number sequence meets the generation rules of a bank card number, and recognizing the number sequence as the bank card number when the number sequence meets the generation rules of the bank card number. According to the number recognition method and device, the problem that a user needs to input a number sequence by hand so that a bank card number can be recognized is solved, and the effect of improving the recognition efficiency of bank card numbers is achieved.