To provide a cable connecting connector having connection strength between a conductor and a contact by reducing the resistance at the time of collectively soldering cables with different diameters, it is configured of a horizontally elongated insulating housing, a plurality of contacts each having a base part to be secured to the insulating housing, and a connecting part having a same height in an up and down direction, and arranged in parallel to one another and perpendicular to a lengthwise direction of the insulating housing, and thermoplastic holding base parts each protruding from a flat surface of the insulating housing into between the contacts and facing the connecting parts thereof.