A multiway switch, a radio frequency system, and a wireless communication device are provided. The multiway switch includes n T ports and four P ports. At least one of the n T ports is coupled with all of the four P ports, where n is an integer and 4≤n. The multiway switch is configured to be coupled with a radio frequency circuit and an antenna system of an electronic device to implement a preset function of the electronic device. The antenna system includes four antennas corresponding to the four P ports. The preset function is a function of transmitting a sounding reference signal (SRS) through the four antennas in turn.