Including the existing hose and the filling nozzle connected therewith, which is characterized in that: the nozzle is externally adapted to various pipe diameters, and the insertion pipe is designed to be a conical surface for easy insertion; the interior is composed of a The inner tube and a circular film having a peripheral edge fixed to the joint between the insertion tube and the inner tube and the other parts can be freely opened as the piston are disposed thereon, wherein the diameter of the film is larger than the inner diameter of the inner tube and smaller than that of the inner tube. Outer diameter, and only a small edge of the garden film is connected to the cannula and the inner tube to form a complete car fuel tube.