A V-shaped antenna and a communication system are disclosed. The system includes a mounting bracket and at least two antennas, and the at least two antennas are mounted on the mounting bracket around a periphery of the mounting bracket. The at least two antennas include a V-shaped antenna. The V-shaped antenna includes two mounting plates. A radiating element array is mounted on a surface of a side that is of each mounting plate and that is away from the mounting bracket, and planes on which the two mounting plates are located intersect, to form a V-shaped structure. One of the two mounting plates has a first axis, the other mounting plate has a second axis, and the first axis and the second axis are perpendicular to a center line extending along an axis of the mounting bracket.