An apparatus for managing a passcode comprises: one or more processors; a memory; and one or more programs stored in the memory and configured to be executed by said one or more processors. The program comprises: a storage module for storing passcode management data; an input window module for displaying the input window on which multiple key buttons are arranged; a combination code generating module for checking the code corresponding to each inputted key button in the code table included in the passcode management data, when the key button is inputted via the input window, and generating a combination code by combining each checked code; and a passcode acquiring module for receiving the passcode with a set storage address from a passcode storage server based on the generated combination code.