A wire connection terminal structure comprising a leaf spring, a conductive plate and a fixing frame, which are mounted in an insulation case, the leaf spring and the conductive plate being framed and assembled with the fixing frame, the conductive plate being formed with a base section assembled with the fixing frame, the leaf spring being formed with an elastic swingable holding section extending to a position in contact with the base section, the leaf spring being further formed with a locating section secured to the fixing frame and a bight section connected between the locating section and the holding section, the holding section and the base section defining therebetween an elastic holding mouth, wherein: the fixing frame has a first fixing section, a second fixing section and a connection section in the form of a frame, the second fixing section being positioned in a position opposite to the first fixing section, the connection section being connected between the first and second fixing sections (31, 32), the leaf spring and the conductive plate being respectively disposed and located on the first and second fixing sections (31, 32), the elastic swingable holding section extending from the leaf spring to the base section of the conductive plate, the first fixing section is formed with a first stop section in a position opposite to the connection section, the first stop section extending from one edge of the first fixing section toward the second fixing section, which edge is distal from the connection section, the second fixing section being formed with a second stop section in a position opposite to the connection section, the second stop section extending from one edge of the second fixing section toward the first fixing section, in a direction reverse to the extending direction of the first stop section, which edge is distal from the connection section, characterized in that: the conductive plate is also formed with at least one soldering leg extending from the base section out of the case, the elastic swingable holding section extends from the leaf spring to the base section of the conductive plate so as to push the base section and thereby fix the base section on the second fixing section, and the conductive plate and the fixing frame are further formed with engagement structures (23, 39) to help in locating the conductive plate and the fixing frame. the fixing frame has a first fixing section, a second fixing section and a connection section in the form of a frame, the second fixing section being positioned in a position opposite to the first fixing section, the connection section being connected between the first and second fixing sections (31, 32), the leaf spring and the conductive plate being respectively disposed and located on the first and second fixing sections (31, 32), the elastic swingable holding section extending from the leaf spring to the base section of the conductive plate, the first fixing section is formed with a first stop section in a position opposite to the connection section, the first stop section extending from one edge of the first fixing section toward the second fixing section, which edge is distal from the connection section, the second fixing section being formed with a second stop section in a position opposite to the connection section, the second stop section extending from one edge of the second fixing section toward the first fixing section, in a direction reverse to the extending direction of the first stop section, which edge is distal from the connection section, characterized in that: the conductive plate is also formed with at least one soldering leg extending from the base section out of the case, the elastic swingable holding section extends from the leaf spring to the base section of the conductive plate so as to push the base section and thereby fix the base section on the second fixing section, and the conductive plate and the fixing frame are further formed with engagement structures (23, 39) to help in locating the conductive plate and the fixing frame. the conductive plate is also formed with at least one soldering leg extending from the base section out of the case, the elastic swingable holding section extends from the leaf spring to the base section of the conductive plate so as to push the base section and thereby fix the base section on the second fixing section, and the conductive plate and the fixing frame are further formed with engagement structures (23, 39) to help in locating the conductive plate and the fixing frame.