Threading device free of herringbone ladder operation

The threading device comprises a lead device and a trimming device, the lead device comprises a lead steel pipe and a lead guide pipe with an elbow, the lead guide pipe is inserted into the lead steel pipe and is assembled and connected with the lead steel pipe, the elbow is close to a lead operation point, and a lead head is arranged at the end of the elbow. The thread trimming device comprises threading scissors and an operating handle, the fixed end of the threading scissors is arranged in the first galvanized steel pipe, and the movable end of the threading scissors penetrates through the second galvanized steel pipe through a first straight bar to be connected with the operating handle. The threading decoration is divided into the thread leading device and the thread cutting device, the cutting structure is flexibly connected with all components, the lengthening and heightening design is achieved, the overall structure is simple, materials are convenient to purchase, manufacturing is rapid, traditional t