A cordless curtain is provided according to the present application, to simplify the way of winding a traction cord. The technical solution of a cordless curtain according to an embodiment of the present application includes a stretchable component, a movable guide-line sliding assembly, a guide-line fixing seat assembly and a traction cord. One end of the stretchable component is fixed, and another end of the stretchable component is connected to the guide-line sliding assembly; the position of the guide-line fixing seat assembly is fixed and the guide-line fixing seat assembly is connected to the guide-line sliding assembly via the traction cord.