PURPOSE: To make the whole of a multiple coupling in a compact size and to facilitate connection with the other wires by uniting plural couplings of tubes for a fluid and connectors for connecting wires in the wire incorporating tubes in a body to form a multiple coupling.

CONSTITUTION: The joining of tubes of the terminal portions of wire incorporating multiple tubes 3 is released, and the five tubes 5 for air pressure are respectively inserted in each one end side of coupling 10. The respective inserted tubes for air pressure are firmly held by the couplings 10, with click pieces of grippers cut into the outer peripheral surfaces thereof. Wires 6a incorporated in the wire incorporating tube 6 are drawn out of the forward end portions of the wire incorporating tubes 6 by a designated length, and crimp-style terminals or the like are fixed to the forward ends of the wires 6a and fitted in terminal receiving holes of the connectors 30 to be conductive-connected to the connectors 30. Tubes 7 for air pressure of wire incorporating multiple tubes 4 on the other side of a multiple coupling 1 and wires 8a in the wire incorporating tubes are similarly connected to the other end sides of the multiple coupling 1, so that they are surely connected through the multiple coupling 1.