A communication device, comprising: a main body formed with a rim, the rim of the main body comprising a plurality of rim parts (32a, 32b, 34a, 34b); a mother board arranged at a first side of the main body and correspondingly arranged between the rim parts (32a, 32b, 34a, 34b); a housing mounted on the main body and configured to cover the mother board, an orthogonal projection of the housing onto the main body defining a covering range, the housing comprising a plurality of side parts (38a, 38b, 40a, 40b); a frame mounted to the main body, the main body being located between the frame and the housing, the frame comprising a plurality of frame parts (48a, 48b, 50a, 50b) defining a space for accommodating the main body, an outer dimension of the frame being greater than an outer dimension of the main body, and an outer dimension of the housing being smaller than or equal to the outer dimension of the main body; a first antenna electrically connected to the mother board and arranged along the rim of the main body, the first antenna comprising a feed terminal electrically connected to the mother board, a portion of the first antenna being attached to one of the rim parts of the main body, wherein at least one portion of the first antenna is extended beyond one of the side parts of the housing to be located outside the covering range of the housing, the at least one portion of the first antenna is located between the frame and the main body, the at least one portion of the first antenna comprises one of a first radiation part and a second radiation part, the first radiation part is configured to transmit or receive a high frequency signal, the second radiation part is configured to transmit or receive a low frequency signal, the second radiation part comprises a first conductor and a second conductor coupled to the first conductor, the second conductor has a first slit and a second slit, the first slit is arranged along a longitudinal direction of the second conductor, the second slit is turned relative to the first slit and communicated with the first slit, a gap is formed between the first radiation part and the second radiation part, the first radiation part has a third slit arranged along a longitudinal direction of the first radiation part, a portion of the first antenna is located adjacent to a corner of the mother board; and a second antenna and a third antenna, wherein each of the second antenna and the third antenna comprises a feed terminal (70, 74) electrically connected to the mother board, a portion of each of the second antenna and the third antenna is extended beyond the housing to be located outside the covering range of the housing, portions of the second antenna and the third antenna are respectively located adjacent to another two corners (62, 64) of the mother board. a main body formed with a rim, the rim of the main body comprising a plurality of rim parts (32a, 32b, 34a, 34b); a mother board arranged at a first side of the main body and correspondingly arranged between the rim parts (32a, 32b, 34a, 34b); a housing mounted on the main body and configured to cover the mother board, an orthogonal projection of the housing onto the main body defining a covering range, the housing comprising a plurality of side parts (38a, 38b, 40a, 40b); a frame mounted to the main body, the main body being located between the frame and the housing, the frame comprising a plurality of frame parts (48a, 48b, 50a, 50b) defining a space for accommodating the main body, an outer dimension of the frame being greater than an outer dimension of the main body, and an outer dimension of the housing being smaller than or equal to the outer dimension of the main body; a first antenna electrically connected to the mother board and arranged along the rim of the main body, the first antenna comprising a feed terminal electrically connected to the mother board, a portion of the first antenna being attached to one of the rim parts of the main body, wherein at least one portion of the first antenna is extended beyond one of the side parts of the housing to be located outside the covering range of the housing, the at least one portion of the first antenna is located between the frame and the main body, the at least one portion of the first antenna comprises one of a first radiation part and a second radiation part, the first radiation part is configured to transmit or receive a high frequency signal, the second radiation part is configured to transmit or receive a low frequency signal, the second radiation part comprises a first conductor and a second conductor coupled to the first conductor, the second conductor has a first slit and a second slit, the first slit is arranged along a longitudinal direction of the second conductor, the second slit is turned relative to the first slit and communicated with the first slit, a gap is formed between the first radiation part and the second radiation part, the first radiation part has a third slit arranged along a longitudinal direction of the first radiation part, a portion of the first antenna is located adjacent to a corner of the mother board; and a second antenna and a third antenna, wherein each of the second antenna and the third antenna comprises a feed terminal (70, 74) electrically connected to the mother board, a portion of each of the second antenna and the third antenna is extended beyond the housing to be located outside the covering range of the housing, portions of the second antenna and the third antenna are respectively located adjacent to another two corners (62, 64) of the mother board.