Connecting structure for earphone

A connecting structure for an earphone comprising:

• a male connector including a plug terminal and an insulation holder, with the plug terminal having a locking portion connected adjacent to a bottom of the plug terminal and spaced from the insulation holder, with the locking portion having an annular peripheral side radially spaced from the plug terminal, with at least one protrusion extending radially outwardly from the annular peripheral side of the locking portion, wherein the plug terminal is mounted in the insulation holder, and between the insulation holder and the locking portion is defined an inserting groove;
• a female connector including an insertion seat and a body, with the body having a fixing portion inserted into the inserting groove, with the fixing portion having at least one alignment orifice corresponding to the annular peripheral side and the at least one protrusion, wherein the insertion seat is fixed in the body to receive and electrically connect with the plug terminal.