Control method, control device and electronic device

The present invention discloses a control device. The control device comprises an antenna body, a matching circuit, a first switch unit and a second switch unit. The matching circuit is arranged at a signal feed point, one end of the matching circuit and one end of the first switch unit are connected with one end of the antenna body, and the other end of the first switch unit is grounded. One end of the second switch unit is connected with the other end of the antenna body, and the other end of the second switch unit is grounded, wherein the antenna body can work in a first mode, a second mode or a third mode, and the first and second switch units both work in a first state or a second state. The antenna body is used to start an antenna of the corresponding mode, and the antenna of the corresponding mode is utilized to transmit and receive a radio frequency signal, and is decided by the states of the first and second switch units. The present invention also discloses a control method and an electronic device, so that the antenna design difficulty can be reduced, and the production cost can be saved.