A semiconductor switch device comprising: a semiconductor switch main body unit that has a plurality of semiconductor switch chips and a control unit which are layered; a plurality of first terminals that are connected to the semiconductor switch main body unit; and a plurality of second terminals that are connected to the semiconductor switch main body unit, the first terminals and the second terminals being connected via the semiconductor switch main body unit and a connection state between the first terminals and the second terminals being changed by the semiconductor switch main body unit so that a signal input from the first terminal being output from any one of the second terminals in a switchable manner, wherein each of the semiconductor switch chips has: a plurality of in-chip signal lines (14, 15) that can be connected with each other; a connection-state changing unit that changes the connection state between the plurality of in-chip signal lines (14, 15) according to an instruction from the control unit; and a plurality of non-contact communication units that are respectively connected to the plurality of in-chip signal lines (14, 15), wherein each of the non-contact communication units of each of the semiconductor switch chips communicates with the non-contact communication units of one or more other semiconductor switch chips in a non-contact manner in a layering direction, wherein, in any given semiconductor switch chip, the first terminal and the second terminal are connected to any given in-chip signal line (14, 15), and wherein the connection-state changing unit of each semiconductor switch chip changes the connection state between the plurality of in-chip signal lines (14, 15) according to the instruction from the control unit, so that the connection state between the plurality of first terminals and the plurality of second terminals is changed. a semiconductor switch main body unit that has a plurality of semiconductor switch chips and a control unit which are layered; a plurality of first terminals that are connected to the semiconductor switch main body unit; and a plurality of second terminals that are connected to the semiconductor switch main body unit, the first terminals and the second terminals being connected via the semiconductor switch main body unit and a connection state between the first terminals and the second terminals being changed by the semiconductor switch main body unit so that a signal input from the first terminal being output from any one of the second terminals in a switchable manner, wherein each of the semiconductor switch chips has: a plurality of in-chip signal lines (14, 15) that can be connected with each other; a connection-state changing unit that changes the connection state between the plurality of in-chip signal lines (14, 15) according to an instruction from the control unit; and a plurality of non-contact communication units that are respectively connected to the plurality of in-chip signal lines (14, 15), a plurality of in-chip signal lines (14, 15) that can be connected with each other; a connection-state changing unit that changes the connection state between the plurality of in-chip signal lines (14, 15) according to an instruction from the control unit; and a plurality of non-contact communication units that are respectively connected to the plurality of in-chip signal lines (14, 15), wherein each of the non-contact communication units of each of the semiconductor switch chips communicates with the non-contact communication units of one or more other semiconductor switch chips in a non-contact manner in a layering direction, wherein, in any given semiconductor switch chip, the first terminal and the second terminal are connected to any given in-chip signal line (14, 15), and wherein the connection-state changing unit of each semiconductor switch chip changes the connection state between the plurality of in-chip signal lines (14, 15) according to the instruction from the control unit, so that the connection state between the plurality of first terminals and the plurality of second terminals is changed.