The present invention provides a SMS authentication method. The SMS authentication method includes transferring the authentication message into different types of authentication codes and/or review codes, sending the authentication codes and/or review codes to the authentication request end and the user via different types, providing the authentication codes input by the user and the authentication codes from the authentication service supply end to the authentication service supply end by the authentication request end, and making the user determine according to the review codes whether the authentication procedure is correct. Hence, the SMS authentication method of the present invention prevents the authentication information from being illegally recorded or stole during the transmission of the authentication message and prevents the phone number from being stole or forged.