The invention discloses a task channel configuration type high-power signal switching device, which is connected with a plurality of transmitting devices and a plurality of transmitting antennas, comprising a plurality of task channels, wherein, each task channel is connected with an output end of each transmitting device and an input end of each transmitting antenna through a connecting line, andeach connecting line is provided with a radio frequency signal switch; and the task channel is connected with an output end of each transmitting device and an input end of each transmitting antenna through a connecting line through a connecting line. A task channel configuration type high-power signal switch device of the invention has simple structure, the connection channel between the transmitting equipment and the transmitting antenna is simplified, and the use quantity of the radio frequency signal switch is reduced. When in use, the communication transmitting task can be allocated to the task channel first, and then the transmitting equipment and the transmitting antenna are configured to the task channel, so as to realize the high-power signal transmitting task. Compared with the prior art, the invention overcomes the shortcomings of the prior antenna switching device such as large volume, complex structure, low reliability, low utilization rate and high cost.