Abstract: A luggage carrier for bicycles having two parallel tracks on the front in longitudinal direction connected to the seat tube by two foldable connections and a clamp and the seat stays by a link, two channel plates on two opposite bottom frames thereof adjustably connected to the axle of the free-wheel hub by two elongated bottom adjustment plates, and two fasteners respectively fastened to the channel plates on the outside for tying up tie ropes in securing the load. By changing the positions of the foldable connections and the link on the tracks, the position of the luggage-carrier on the bicycle is adjusted horizontally. By changing the positions of the elongated bottom adjustment plates on the channel plates, the position of the luggage-carrier on the bicycle is adjusted vertically.