A machine-card dynamic binding method, characterized by comprising: providing a first basic file and a second basic file on a Subscriber Identification Module, SIM, card, wherein the first basic file is used for pre-storing an International Mobile Equipment Identity, IMEI, number/numbers of one or a group of terminals, and the second basic file is used for storing a status flag of a binding check result; setting, by the SIM card, a Personal Identification Number, PIN, to be in a blocked status in an initialization process, indicating that an SIM service table supports an additional terminal profile to a terminal, and receiving a profile download instruction; sending, by the SIM card, a proactive PROVIDE LOCAL INFORMATION command to the terminal after determining that the terminal supports the PROVIDE LOCAL INFORMATION command, and receiving a terminal response including an IMEI number of the terminal; and matching, by the SIM card, the IMEI number with the IMEI number in the first basic file, and determining that a binding check succeeds if matching succeeds, and setting a status flag of a binding check success into the second basic file, and setting the PIN to be in an unlocked status and a disable status after SIM card initialization is completed; wherein the method further comprises: when the SIM card and the terminal perform an over the AT interface interaction, the terminal determining that a data change occurs in the first basic file, performing restart and reset operations of the terminal, the SIM card performing initialization again after the restart of the terminal, and performing a binding check of the SIM card and the terminal in an initialization process; or, the method further comprises: when a data change occurs in the first basic file, the SIM card sending a proactive REFRESH command to the terminal, selecting an SIM card initialization mode, triggering resetting of the SIM card, performing initialization again after the refresh of the terminal, and performing a binding check of the SIM card and the terminal in an initialization process. providing a first basic file and a second basic file on a Subscriber Identification Module, SIM, card, wherein the first basic file is used for pre-storing an International Mobile Equipment Identity, IMEI, number/numbers of one or a group of terminals, and the second basic file is used for storing a status flag of a binding check result; setting, by the SIM card, a Personal Identification Number, PIN, to be in a blocked status in an initialization process, indicating that an SIM service table supports an additional terminal profile to a terminal, and receiving a profile download instruction; sending, by the SIM card, a proactive PROVIDE LOCAL INFORMATION command to the terminal after determining that the terminal supports the PROVIDE LOCAL INFORMATION command, and receiving a terminal response including an IMEI number of the terminal; and matching, by the SIM card, the IMEI number with the IMEI number in the first basic file, and determining that a binding check succeeds if matching succeeds, and setting a status flag of a binding check success into the second basic file, and setting the PIN to be in an unlocked status and a disable status after SIM card initialization is completed; wherein the method further comprises: when the SIM card and the terminal perform an over the AT interface interaction, the terminal determining that a data change occurs in the first basic file, performing restart and reset operations of the terminal, the SIM card performing initialization again after the restart of the terminal, and performing a binding check of the SIM card and the terminal in an initialization process; or, the method further comprises: when a data change occurs in the first basic file, the SIM card sending a proactive REFRESH command to the terminal, selecting an SIM card initialization mode, triggering resetting of the SIM card, performing initialization again after the refresh of the terminal, and performing a binding check of the SIM card and the terminal in an initialization process.