An LTE communication card (10, 30), comprising: an SDIO interface (101, 301), comprising data pins adapted to be selectively inserted into an SDIO card slot (201, 401) of an electronic device (20, 40); an LTE baseband processing unit (102, 302) connected to the data pins, being configured to obtain from the data pins a first data signal supplied by the electronic device (20, 40) and modulate the first data signal; an LTE transceiving unit (103, 303) connected to the LTE baseband processing unit (102, 302), being configured to obtain the first data signal that has been modulated; and an antenna unit (104, 304 and 305) connected to the LTE transceiving unit (103, 303), being configured to transmit the first data signal, and further obtain an LTE RF signal from the outside and transmit the LTE RF signal to the LTE transceiving unit (103, 303), and the LTE RF signal being transmitted by the LTE transceiving unit (103, 303) to the LTE baseband processing unit (102, 302) and then demodulated by the LTE baseband processing unit (102, 302) to obtain a second data signal for transmission to the electronic device (20, 40) via the data pins; it is characterized in that the LTE communication card (10, 30) further comprises a memory connected to the LTE baseband processing unit (102, 302) and configured to store data originally stored in a Universal Subscriber Identity Module USIM card or a Subscriber Identity Module SIM card, such that the electronic device (20, 40) using the LTE communication card (10, 30) is capable of omitting a card slot for the USIM card or the SIM card; the antenna unit comprises an LTE main antenna and an LTE Multiple-Input Multiple-Output MIMO antenna, one of the LTE main antenna and the LTE MIMO antenna is disposed in an edge region opposite to the SDIO interface (101, 301) at a side of an enclosure of the LTE communication card (10, 30), and another of the LTE main antenna and the LTE MIMO antenna is disposed in an edge region opposite to the SDIO interface (101, 301) at an opposite side of the enclosure of the LTE communication card (10,30). an SDIO interface (101, 301), comprising data pins adapted to be selectively inserted into an SDIO card slot (201, 401) of an electronic device (20, 40); an LTE baseband processing unit (102, 302) connected to the data pins, being configured to obtain from the data pins a first data signal supplied by the electronic device (20, 40) and modulate the first data signal; an LTE transceiving unit (103, 303) connected to the LTE baseband processing unit (102, 302), being configured to obtain the first data signal that has been modulated; and an antenna unit (104, 304 and 305) connected to the LTE transceiving unit (103, 303), being configured to transmit the first data signal, and further obtain an LTE RF signal from the outside and transmit the LTE RF signal to the LTE transceiving unit (103, 303), and the LTE RF signal being transmitted by the LTE transceiving unit (103, 303) to the LTE baseband processing unit (102, 302) and then demodulated by the LTE baseband processing unit (102, 302) to obtain a second data signal for transmission to the electronic device (20, 40) via the data pins; it is characterized in that the LTE communication card (10, 30) further comprises a memory connected to the LTE baseband processing unit (102, 302) and configured to store data originally stored in a Universal Subscriber Identity Module USIM card or a Subscriber Identity Module SIM card, such that the electronic device (20, 40) using the LTE communication card (10, 30) is capable of omitting a card slot for the USIM card or the SIM card; the antenna unit comprises an LTE main antenna and an LTE Multiple-Input Multiple-Output MIMO antenna, one of the LTE main antenna and the LTE MIMO antenna is disposed in an edge region opposite to the SDIO interface (101, 301) at a side of an enclosure of the LTE communication card (10, 30), and another of the LTE main antenna and the LTE MIMO antenna is disposed in an edge region opposite to the SDIO interface (101, 301) at an opposite side of the enclosure of the LTE communication card (10,30).