The application relates to the technical field of connector terminals, in particular to a novel fixing device of a charging connector terminal, which comprises a wiring terminal and an interface, a fixing mechanism is arranged on the wiring terminal and the interface, the fixing mechanism comprises a moving piece fixedly sleeved on the wiring terminal, a fixing piece is sleeved on the interface, four connecting rods are arranged between the moving piece and the fixing piece, and the connecting rods are slidingly connected in the moving piece; the fixing device has the beneficial effects that the moving piece is connected with the wiring terminal through the arrangement of the fixing mechanism, the fixing piece is connected with the interface, the moving piece is connected with the fixing piece through the connecting rods, the wiring terminal corresponds to the interface, the moving piece can slide along the connecting rods through the sliding connection between the connecting rods and the moving piece, the wiring terminal can be inserted into the interface, and the wiring terminal can be connected with or disconnected from the interface under the movement of the moving piece.