The present invention relates to a mobile communication device also having walkie-talkie functionality, comprising a housing and a mobile communication motherboard. The top of the housing has a through hole, and has a hanging piece used to hang the mobile communication device arranged thereon, the hanging piece comprising a hanging piece body and a socket used to plug in an antenna, the socket being internally provided with a connector used to connect the antenna. The through hole internally has a signal transfer contact, and the mobile communication motherboard has a mobile communication module and a walkie-talkie function module, one end of the signal transfer contact being connected to the connector, and the other end being connected to the walkie-talkie function module. The device has both cellular phone and walkie-talkie functionality, antenna mounting being realized by the hanging piece; in addition to being used for hanging, the hanging piece is also a holder and adapter for the antenna, and as the hanging device does not need to go around the antenna, but is rather joined to the antenna, the structure is more compact, and assembly and disassembly are convenient. Since the antenna can be removed, when not using walkie-talkie functionality, the device is the same as an ordinary cellular phone, and is more acceptable to a user; when walkie-talkie use is required, the antenna can be attached, making carrying and use more convenient.