To prevent decrease in isolation between adjoining input ports of a matrix switch or between adjoining output ports.

A multi-channel high frequency signal switching device includes: connectors in which all or a part of a plurality of terminals are connected to a plurality of coil elements; a matrix switch equipped with a plurality of the input ports arranged in line and a plurality of the output ports arranged in line; and a wiring means for connecting each of the terminals connected to a plurality of coil elements with the input ports in use which are a part of a plurality of input ports and whose number is less than the total number of the input ports. In all or a part of the input ports in use, the wiring means connects each of the terminals with the input ports in use so that the distance of adjoining input ports in use becomes larger than the distance of the adjoining input ports.