A conductive connection terminal that is extensible and compressible in a longitudinal direction, comprising: a first contact member including a first tip portion configured to contact with one electrode of a contact target, and a first base end portion ; a second contact member including a second tip portion configured to contact with another electrode of the contact target, and a plurality of tongue parts configured to contact with the first base end portion , each of the tongue parts including a boss that extends from an end of a flange portion on the opposite side continuing to the second tip portion , and an extending portion that extends from the boss , extending in a manner following the inner perimeter of the boss and that has a thickness smaller than the thickness of the boss in a direction orthogonal to the longitudinal axis of the conductive connection terminal; an elastic member configured to extend and compress the first contact member and the second contact member in the longitudinal direction; and a load applying unit configured to apply a load to the bosses at one end of the tongue parts near the second tip portion in a direction orthogonal to the longitudinal direction of the conductive connection terminal so as to bring the extending portions of the tongue parts into contact with an outer circumference of the first base end portion , wherein the bosses at the one end of the tongue parts are tightened by press-fitting the load applying unit, so that the diameter of the outer perimeter of the bosses becomes reduced. a first contact member including a first tip portion configured to contact with one electrode of a contact target, and a first base end portion ; a first tip portion configured to contact with one electrode of a contact target, and a first base end portion ; a second contact member including a second tip portion configured to contact with another electrode of the contact target, and a plurality of tongue parts configured to contact with the first base end portion , each of the tongue parts including a boss that extends from an end of a flange portion on the opposite side continuing to the second tip portion , and an extending portion that extends from the boss , extending in a manner following the inner perimeter of the boss and that has a thickness smaller than the thickness of the boss in a direction orthogonal to the longitudinal axis of the conductive connection terminal; a second tip portion configured to contact with another electrode of the contact target, and a plurality of tongue parts configured to contact with the first base end portion , each of the tongue parts including a boss that extends from an end of a flange portion on the opposite side continuing to the second tip portion , and an extending portion that extends from the boss , extending in a manner following the inner perimeter of the boss and that has a thickness smaller than the thickness of the boss in a direction orthogonal to the longitudinal axis of the conductive connection terminal; an elastic member configured to extend and compress the first contact member and the second contact member in the longitudinal direction; and a load applying unit configured to apply a load to the bosses at one end of the tongue parts near the second tip portion in a direction orthogonal to the longitudinal direction of the conductive connection terminal so as to bring the extending portions of the tongue parts into contact with an outer circumference of the first base end portion , wherein the bosses at the one end of the tongue parts are tightened by press-fitting the load applying unit, so that the diameter of the outer perimeter of the bosses becomes reduced. <EOS>