An analysis chip device according to an exemplary embodiment of the present invention includes a placing board (17) on which a microchip (14) is placed, and a coupling (20) attached to a cover (11) of the microchip (14). The coupling (20) includes a linear electrode (25), a sleeve (22) including an attach part (28) that is attached to the cover (11) and an air core part (23) in which the electrode (25) is provided, the sleeve (22) having a side surface in which an inlet port (26) is provided, the inlet port (26) communicating with the air core part (23); and a holder (21) including a pipe connection part (27) to which a pipe (32) is connected, the pipe (32) supplying gas to the inlet port (26), the holder (21) holding the sleeve (22) so as to surround the inlet port (26).