Abstract: An improved amphibious vehicle comprising a confined housing of a vehicle is provided. The confined housing is provided with a central connecting chamber under a cabinet adjacent to the central portion. An engine room and a floating cell are respectively provided in the front and rear, positions of the central connecting chamber. A thrust propeller is disposed under the tail portion of the floating cell. Characterized in that except the central connecting chamber, the engine room, and the floating cell which are indispensable components to the confined housing of the improved vehicle, the confined housing is further provided with a plurality of hollow cells among the confined housing other than those operating space required for maintenance conducted by the technician. Each of the hollow cells is filled with an imperious foam material to increase the floating capability such that the improved amphibious vehicle can readily float on the water.