To mount the case housing an earphone cord on a place convenient to be used by adjusting the length of the earphone cord properly so as to prevent the earphone from coming off.

The case is provided with a 1st reel set 12 that is suited to adjust the length of an earphone code in use or to house it, has a 1st outer surface 16 and a 1st inner surface 18, which is provided with a 1st projection pole 24 and plural recessed parts in the outer circumferential part, a 2nd reel set 14 that has a 2nd outer surface 20, a 2nd inner surface 22, a 2nd projection pole 26 on the 2nd inner surface 22 and the 2nd projection pole 26 for connecting to the 1st projection pole 24 to form a cord housing groove, at least one hook that is placed on the 1st outer surface 16 of the 1st reel set 12 to fix the earphone cord and at least one mounting means 40 that is placed on the 2nd outer surface 20 of the 2nd reel set 14 to be mounted on a body of the user.