A communication device includes a main body, a mother board, a housing and a first antenna. The main body is formed with a rim. The mother board is arranged at a first side of the main body. The housing is mounted on the main body and configured to cover the mother board. An orthogonal projection of the housing onto the main body defines a covering range. The first antenna is electrically connected to the mother board and arranged along the rim of the main body. Wherein, at least one portion of the first antenna is located outside the covering range of the housing.