To provide a connecting structure of wall members of a unit room which can easily connect the side end of a wall panel and the side end of a functional panel to each other.

This connecting structure of wall members of a unit room is so constructed that plural wall panels 1 are erected along the wall surface of a unit room, a functional panel 2 which has the same height as that of the wall panel 1 and is provided with various functions is arranged between suitable wall panels 1, and the side ends of the wall panels 1 or the side end of the wall panel and the side end of the functional panel 2 are connected to each other. In this structure, a slit 17 is provided on the upper and lower parts of a side end surface 6 bent to the back side of the side end of the functional panel 2. A plate spring material 18 is mounted on a side frame 12 provided on the side end of the back of the wall panel 1, and an elastic locking part 19 is integrated with the plate spring material 18. The elastic locking part 19 is locked in the slit 17 on the inner surface side of the side end surface 6 of the functional panel 2.