Realizing method for mobile phone user to access to internet

A realization method for accessing Internet by mobile phone users is that a cell phone number and service ciphered code are input by Portal or PPPoE dialing terminal to be sent to a cut-in device, which receives the log-onto the net request of the customer end and transmits said request to AAA server to carry out the legal verification, if the server finds out the input is hand call number, it asks for verifying authority of the call number to the mobile intelligent network system, the intelligent network informs AAA server after passing through the verification, which applies for the user fee to the intelligent network and freezes part fee for logging onto the net, then AAA sends information of certification success to the access device which opens the port to inform the user to log onto the net.