A banana plug that is used for electric secondary terminal jack

The utility model discloses a banana plug that is used for electric secondary terminal jack, including first cutting ferrule, one side inner wall of first cutting ferrule is opened there is circular welding hole, and just the inner wall of circular welding hole welds and has conductive sleeve, one side inner wall welding that conductive sleeve kept away from first cutting ferrule has four to fivespring rails, and one side outer wall welding of spring rails has a fixture block, the inner wall welding of one side of first cutting ferrule has the inner tube, and the inner wall of inner tube passes through the threaded pipe of threaded connection, one side outer wall butt fusion that first cutting ferrule was kept away from to the screwed pipe has the second cutting ferrule, and the top outerwall of second cutting ferrule and bottom outer wall has all opened the spout, the inner wall sliding connection of spout has the slider, and one side butt fusion of the back of the body mutually oftwo sliders has same protec