A method and an apparatus for storing a redeem code and a method and an apparatus for verifying a redeem code. The method for storing a redeem code includes generating a random value and determining an index of the random value according to an order in which the random value is generated, generating a number pair according to the random value and the index of the random value, mapping the number pair to a string and generating a redeem code according to the string, and determining a storage location of the random value according to the index of the random value, and saving the random value at the determined storage location.