The invention discloses a LNG (Liquefied Natural Gas) mobile filling vehicle with a filling structure and belongs to the technical field of low-temperature liquid mobile filling, storing and transporting vehicles. The LNG mobile filling vehicle with the filling structure comprises a tractor vehicle, a LNG low-temperature storage tank, a tank bottom type filling mechanism, a special semi-trailer chassis walking mechanism, a rear operation pipeline and a bin body, wherein the LNG low-temperature storage tank, the tank bottom type filling mechanism, the rear operation pipeline and the bin body are mounted on the special semi-trailer chassis walking mechanism so as to form a low-temperature liquid semi-trailer; the low-temperature liquid semi-trailer is suspended on a traction seat of a traction 1 by means of a traction pin so as to form a whole vehicle. The LNG mobile filling vehicle with the filling structure not only has the function of stopping in any place at any time for independently filling LNG for LNG vehicles and dual-fuel vehicles, but also has the transportation function of transporting LNG by the road; meanwhile, the LNG mobile filling vehicle with the filling structure not only has the function of stopping in a fixed place at any time for independently filling LNG for LNG vehicles and dual-fuel vehicles, but also has the transportation function of transporting LNG by the road. Due to the lightweight design of the whole vehicle, the whole vehicle is relatively light in weight and relatively large in maximum filling weight or filling quantity.