The present invention discloses a connector for flat conducting wires that is directed into the insertion opening, the front end comes in contact with the first locking protrusion and the second locking protrusion of the connector, respectively causing the first elastic arm and the second elastic arm to deform, thereby causing the first operating part and the second operating part to move towards the third surface until the indented notches correspond to the first locking protrusion and the second locking protrusion, which subsequently causes the first elastic arm and the second elastic arm to return to their former position by means of elastic force, latch-locking the front end of the flat conducting wire in the accommodating space, and through exerting an external force on the upper portion of the first operating part and the upper portion of the second operating part to unlatch and separate from the accommodating space.