Verification code transmission method and system

The invention provides a verification code transmission method and system. The method comprises the following steps: receiving registration information sent by a user through a client application program; generating a verification code, encrypting the verification code to form an encrypted verification code, sending the encrypted verification code to an IP multiplexer, and storing the encrypted verification code in a data memory at the same time; the IP multiplexer forms the encrypted verification code into a composite TS stream and sends the composite TS stream to a satellite modulator; the satellite modulator modulates the received signal and then uplinks the modulated signal to a satellite space station; the satellite space station sends the received signal to the satellite set top box; the satellite set top box displays the verification code on the television end according to the received signal; the user inputs the verification code into the client application program, and registration is completed. The