The utility model relates to a transformer general-purpose short-link line which includes junction boxes corresponding to different phases. The junction boxes have a same structure, and are arranged in parallel. The junction box is provided inside with a central spiral spring. An inside end of the spiral spring is fixed with the junction box, and an outside end of the spiral spring is connected with a coaxial wheel which is wound with a lead. A first end of the lead is connected with the wheel, and a second end of the lead is pulled out from an opening of the junction box. The second end of the lead is provided with a transformer connecting plug. The leads of the junction boxes are electrically connected. When the connection is in demand, the transformer connecting plugs of the junction boxes are inserted into jacks of a to-be-tested transformer, meanwhile, the lead in the junction box is pulled out to drive the wheel to wind up the spiral spring; during the paying-off, the transformer connecting jack is released, the spiral spring is bounced back to drive the wheel to roll back, and then the lead is rolled on the wheel, and finally the lead is taken back. To sum up, the transformer general-purpose short-link line utilizes the measuring tape principle to fold and unfold the lead smoothly, and is suitable for different transformers.