A method for ensuring the service platform the acquisition of the user terminal information under multiple application protocols, wherein a client terminal service connection software is set in the user terminal or the user card, said client terminal service connection software has a service connection user interface and is able to inspect and control the mobile service connection carried out by the mobile terminal, and said method comprises the following steps: Step 1: the user establishes the service request on the mobile terminal; Step 2: the mobile terminal sends the connection establishment request to the mobile network; Step 3: the mobile network assigns an IP address to the user, and sets up the corresponding relationship between the IP address and the user's cellphone number after it has received the connection establishment request; Step 4: the mobile network sends the corresponding relationship between the IP address and the user's cellphone number to the proxy server; Step 5: the proxy server sends the response information to the mobile network after it has received the corresponding relationship between the IP address and the user's cellphone number; Step 6: the mobile network sends the response information of the connection successfully established to the mobile terminal, and sends the IP address assigned to the user to the mobile terminal after the mobile network has received the response information of the proxy server; characterized in that the method further comprises the following steps: Step 7: the mobile terminal initiates the general application protocol request to the mobile network; Step 8: the mobile network transmits the received general application protocol request to the proxy server; Step 9: the proxy server, inserts the corresponding cellphone number into the data package of the general application protocol request according to the corresponding relationship between the IP address and the user's cellphone number after it has received the general application protocol request; Step 10: the proxy server transmits the data package of the general application protocol request including the corresponding cell phone number to the service platform; Step 11: the service platform sends the response information to the proxy server after it has received the data package of the general application protocol request; Step 12: the proxy server transfers the response information to the mobile network; Step 13: the mobile network transfers the response information to the mobile terminal; Step 14: the mobile terminal determines whether the connection is established successfully after it has received the response information; if not, go to the step 7; if yes, the next step follows; Step 15: the mobile terminal sends the service request to the mobile network; and Step 16: the mobile network transmits the service request to the service platform after it has received the service request. Step 1: the user establishes the service request on the mobile terminal; Step 2: the mobile terminal sends the connection establishment request to the mobile network; Step 3: the mobile network assigns an IP address to the user, and sets up the corresponding relationship between the IP address and the user's cellphone number after it has received the connection establishment request; Step 4: the mobile network sends the corresponding relationship between the IP address and the user's cellphone number to the proxy server; Step 5: the proxy server sends the response information to the mobile network after it has received the corresponding relationship between the IP address and the user's cellphone number; Step 6: the mobile network sends the response information of the connection successfully established to the mobile terminal, and sends the IP address assigned to the user to the mobile terminal after the mobile network has received the response information of the proxy server; Step 7: the mobile terminal initiates the general application protocol request to the mobile network; Step 8: the mobile network transmits the received general application protocol request to the proxy server; Step 9: the proxy server, inserts the corresponding cellphone number into the data package of the general application protocol request according to the corresponding relationship between the IP address and the user's cellphone number after it has received the general application protocol request; Step 10: the proxy server transmits the data package of the general application protocol request including the corresponding cell phone number to the service platform; Step 11: the service platform sends the response information to the proxy server after it has received the data package of the general application protocol request; Step 12: the proxy server transfers the response information to the mobile network; Step 13: the mobile network transfers the response information to the mobile terminal; Step 14: the mobile terminal determines whether the connection is established successfully after it has received the response information; if not, go to the step 7; if yes, the next step follows; Step 15: the mobile terminal sends the service request to the mobile network; and Step 16: the mobile network transmits the service request to the service platform after it has received the service request.